Which one of the following will be most reactive for alkaline hydrolysis 

\(Br-CH_2-CH_2-CH_2-CH_2-COOH \)

The most suitable reagent for the conversion of methylbenzoate to be benzyalcohol is 

\(H_2\)/Pd-C 

LiAl\(H_4\) 

Na\(BH_4\)

Li/\(NH_3\)(l)

Which one can be synthesized by Wurtz reaction 

Toluene 

alkyle halide 

alkane 

alkene 

Which one of the following made through condensation polymerization. 

Teflon 

bakelite 

Polythene 

Acrilan 

Which one of the following has hexagonal crystal structure 

\(BaSO_4\) 

CdS 

\(SnO_2\) 

\(Na_2SO_4 ⋅ 10H_2O\)

Which of the following is anti ferromagnetic. 

\(H_2O\) 

\(CrO_2\) 

MnO 

\(MgFe_2O_4\)

Synthesis of amonia is represented by the following reaction. \(\begin{aligned} &\mathrm{N}_{2(\mathrm{~g})}+3 \mathrm{H}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{NH}_{3}(\mathrm{~g})\\ \end{aligned}\)

\( \Delta_rH^{\circ} =-91.8KJ\,\,mol^{-1} \)

 What will be enthalpy of decomposition of ammonia according to reaction. \(2NH_{3_{(g)} }\to N_2+3H_{2_{(g)} };\Delta_rH^{\circ} = ?\) 

\(– 91.8\, kJ \,mol^{–1}\) 

\(+91.8\, kJ\, mol^{–1}\) 

\(– 45.9\, kJ\, mol^{–1}\) 

\(+45.9\,\, kJ mol^{–1}\)

What will be the pH of ⋅001M \(Ba(OH)_2\) solution 

2.0 

8.4 

11.3 

2.7

Which of the following aqueous solution must have the highest boiling point. 

1.0 M NaOH 

1.0 M \(Na_2SO_4 \)

1.0 M \(NH_4 NO_3\) 

1.0 M \(KNO_3\)

Which of the following is the correct for increasing bond order.

\(O_2^+>O_2>O_2^->O_2^{2-} \)

\(O_2^+<O_2<O_2^-<O_2^{2-} \)

\(O_2^+=O_2,O_2^->O_2^{2-} \)

\(O_2^+<O_2>O_2^-<O_2^{2-} \)

Two particles A and B are in motion. If the wavelength associated with particle A in motion is \(5\times 10^{-8}\,m \). What will be the wavelength associated with particle B if the momentum is half than that of A

\(5\times 10^{-8}\,m \)

\(10\times 10^{-8}\,m \)

\(2.5\times 10^{-8}\,m \)

\(0.2\times 10^{-8}\,m \)

The radius of which of the following orbits is same as that of the first Bohr's orbit of H atom? 

\(He^+\) (n=2) 

\(Li^{2+}\) (n=2) 

\(Li^{2+}\) (n=3) 

\(Be^{3+}\) (n=2)

Which of the following substances is serving as a reducing agent in the following reaction?

\(14H^++Cr_2O_7^{2-}+3Ni\to 2Cr^{3+}+7H_2O+3Ni^{2+} \)

\(H_2O \)

\(Ni \)

\(H^+ \)

\(Cr_2O_7^{2-} \)

Which is the strongest acid? 

\(H(ClO)O_2\) 

\(H(ClO)O_3\) 

\(H(ClO)O\) 

\(H(ClO)\)

IUPAC name of compound is

N, N - dimethyl cyclopropan carboxamide 

N - methyl cyclopropanamide 

Cyclopropianomide 

None of the above

Which of the following reaction is not correct.

\(MnO^-_4+8H^++5Fe^{2+}\to 5Fe^{3+}+Mn^{2+}+4H_2O \)

\(2MnO_2+4KOH+O_2\to 4KMnO_4 +2H_2O \)

\(2Na_2CrO_4+2H^+ \to Na_2Cr_2O_7+2Na^++H_2O \)

\( K_2Cr_2O_7+7H_2SO_4+6KI \to 4K_2SO_4+Cr_2(SO_4)_3+3I_2+7H_2O\)

Which of the following compound will give tribromo derivative when treated with bromine water

If \(E° Cu^{2+}|Cu = 0.34V \,\,and \,\,E° Ag^+|Ag = 0.80V\), what is the emf of the cell \(Cu|Cu^{2+} (0.01M) || Ag^+(0.01M)|Ag\)

at 298 K? 

0.40V 

0.46 V 

0.50 V 

0.52 V

The dark purple colours of KMnO4 is due to 

d - d transition 

Ligand field transition 

Charge transfer transition 

σ– \(\pi^+\) transition

The number of σ and π bonds between two carbon atoms in \(CaC_2\) is 

Three σ bonds and no π bonds 

Two π bonds and one σ bond 

Two σ bonds and one π bond 

One π bond and one σ bond

Which one of the following is the weakest Lewis base? 

\(CH_3^-\) 

\(NH_2^-\) 

\(OH^- \) 

\(F^-\)

Which of the following cations will be have minimum flocculation value for arsenic sulphide sol? 

\(Na^+\) 

\(Mg^{2+}\) 

\(Ca^{2+} \)

\( Al^{3+}\)

In the plot of \(log{\Large\frac{x}{m}}\) vs log P for an adsorption, a straight line inclined at an angle of \(θ =14.04^o\) to the x-axis was obtained. The 'n' value for this adsorption process is (tan \(14.04^o\) = 0.25) 

5 

8 

4 

2

Extra pure \(N_2\) can be obtained by heating 

\(NH_3\) with CuO 

\(NH_4 NO_3\) 

\((NH_4)_2 Cr_2O_7\) 

\(Ba (N_3)_2\)

Which of the following exhibits square pyramidal geometry? 

\(X_eF_6 \)

\( X_eO_3 \)

\( BrF_5 \)

\(X_eF_4\)

Which one amongst the following exhibit geometrical isomerism

\([Co^{III}(NH_3)_5Br]SO_4 \)

\([Co^{III}(EDTA)] ^{-1} \)

\([Cr^{III}(SCN)_6] ^{3-} \)

\([Pt^{III}(NH_3)_2Cl_2] \)

The carbocation formed in SN1 reaction of alkyl halide in the slow stop is 

\(SP^3\) - hybridised 

\(SP^2\) - hybridised 

SP - hybridised 

\(SP^3\)d - hybridised

Which of the following compounds is responsible for depletion of Ozone layer? 

Freon 

Chloroform 

D.D.T 

Iodoform 

The chemical reation

is known as 

Gatterman reaction 

Tischenko reaction 

Gatterman - Koch reaction 

Frankland reaction  

When acetone is treated with dilute alkali, the product obtained is 

Mesitylene 

Mesityl oxide 

Paraldheyde 

Phorone

A metal present in insulin is 

aluminium 

zinc 

iron 

copper

Which of the following amino acid is not optically active 

lactic acid 

serine 

alanine 

glycine

Time required for 100% completion of a zero order reaction is 

ak

\(\Large\frac{a}{2k} \)

\(\Large\frac{a}{k} \)

\(\Large\frac{2k}{a} \)

The final product formed in this reaction is

Lassaigne's test for the detection of nitrogen fails in 

\(H_2N – CO – NHNH_2 \cdot HCl \)

\(NH_2 – NH_2 \cdot HCl\) 

\(NH_2 CO NH_2\) 

\(C_6H_5 – NH - NH_2 HCl\)

The self indicating silicagel impregnated with cobalt chloride turns pink on absorbing moisture and becomes blue on heating. The pink and blue colours are repectively due to 

\([Co (H_2O)_6]^{ 2+}\) and \([CoCl_4]^{2-}\) 

\([Co (H_2O)_6]^{ 2+}\) and \(Co_2O_3\) 

\([Co (H_2O)_6]^{ 2+}\) and \([Co (H_2O)_6]^{ 3 +}\) 

\(Co^{2+}\) and \(Co^{3+}\)

Which of the following complex ions has the highest magnetic moment 

\( [Cr (NH_3)_6]^{3+}\) 

\([Fe (CN)_6]^{3–}\) 

\([Fe (CN)_6]^{4–}\) 

\([Zn (NH_3)_6]^{2+}\)

Which of the following compounds is most reactive towards nucleophilic 

\(CH_3CHO\) 

\(PhCOCH_3 \)

PhCOPh 

\(CH_3COCH_3\)

In the cannizzaro reaction given below

\(2\,PhCHO \to PhCH_2OH+PhCO_2^-\),  the slowest step is 

the attack of \(OH^-\) at the carbonyl group 

the transfer of hydride to the carbonyl group 

the obstruction of proton from the carboxylic acid 

the deprotonation of \(PhCH_2 OH\)

Which of the following fcc structures contains cations in the alternate tetrahedral voids 

\(Na_2O\) 

ZnS 

\(CaF_2\) 

CaO

In soap industry, glycerol can be sepeated from spent by using the technique. 

differential extraction 

distillation under reduced pressure 

filteration 

chromatographic sepesation

0.532g of chloroplatinate of an organic base (mol wt. 244) gave 0.195 g of platinum on ignition. The number of nitrogen atoms per molecule of base is

1 (0ne) 

2 (two) 

3 (three) 

4 (four)

The standard emf of a glavanic cell involving cell reaction with n=2 is found to be 0.295V at \(25^{\circ}C\). The equilibrium constant of the reaction would be. 

\(2.0 \times 10^{11} \)

 \(4.0 \times 10^{12} \)

\( 1.0 \times 10^2 \)

\(1.0 \times 10^{10}\)

A reaction occurs spontaneously if 

T∆S < ∆H and both ∆H and ∆S are +ve 

T∆S > ∆H and both ∆H and ∆S are +ve 

T∆S = ∆H and both ∆H and ∆S are +ve 

T∆S > ∆H and ∆H is +ve and ∆S is –ve

The conjugate acid of \(NH_2^ -\) is

\(N_2H_4\) 

\(NH_4^ +\) 

\(NH_2OH\) 

\(NH_3\)

If the density of \(CH_3OH\) is \(0.793 \,KgL^{–1}\), what is the volume of methanol is needed for making 2.5 L of its 0.25 M solution? 

20.2 ml 

50.4 ml 

25.2 ml 

10.0 ml

Among the following the aromatic compound is

Only two isomeric monochloro derivatives are possible for 

n-butane 

2, 4-dimethyl pentane 

benzene 

2 - methyl butane

Major pollutant in Jet plane emission is 

\(SO_2\) 

CFC 

CO 

\(CCl _4\)

Sucrose on hydrolysis gives :

\(β-D-Glucose+α-D-Fructose \)

\( α-D-Glucose+β-D-Glucose \)

\(α-D-Glucose+β-D-Fructose \)

\(α-D-Fructose+β-D-Fructose\)

The following metal ion activates many enzymes, participates in the oxidation of glucose to produce \(ATP\) and with \(Na\) , is responsible for the transmission of nerve signals. 

Iron 

Copper 

Calcium 

Potassium

Which one of the followings has maximum number of atoms ?

\(1\, g\, \,of\, Ag(s) \,\,[Atomic\,\, mass \,\,of \,Ag=108] \)

\(1 \,g\,\, of\,\, Mg(s)\,\, [Atomic\,\, mass\,\, of\,\, Mg=24] \)

\(1\, g \,\,of \,\,O_2 (g)\,\, [Atomic\,\, mass\,\, of\,\, O=16] \)

\(1 \,\,g \,\,of\,\, Li(s)\,\, [Atomic \,\,mass\,\, of \,\,Li=7]\)

The number of protons, neutrons and electrons in \(_{71}^{175}\textrm{Lu}\) , respectively, are :

\(71, 104\,\, and\,\, 71 \)

\(104, 71\,\, and\,\, 71 \)

\(71, 71 \,\,and \,\,104 \)

\(175, 104\,\, and\,\, 71\)

What is the change in oxidation number of carbon in the following reaction ?

\(CH_4(g)+4Cl_2(g)\rightarrow CCl_4(l)+4HCl(g)\)

\(+4 \,\,to\,\, +4 \)

\(0 \,\,to \,\,+4 \)

\(−4\,\, to\,\, +4 \)

\(0 \,\,to\,\, −4\)

Identify the incorrect statement.

\(Cr^{2+}(d^4 )\) is a stronger reducing agent than \(Fe^{2+}(d^6 )\) in water.

The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes.

Interstitial compounds are those that are formed when small atoms like \(H,C\) or \(N\) are trapped inside the crystal lattices of metals.

The oxidation states of chromium in \(CrO_4^{2-}\) and \(Cr_2O_7^{2-}\) are not the same .

For the reaction, \(2Cl(g) → Cl_2 (g)\), the correct option is :

\(\Delta _rH>0\,\,and\,\,\Delta _rS>0 \)

\(\Delta _rH>0\,\,and\,\,\Delta _rS<0 \)

\(\Delta _rH<0\,\,and\,\,\Delta _rS>0 \)

\(\Delta _rH<0\,\,and\,\,\Delta _rS<0\)

Measuring Zeta potential is useful in determining which property of colloidal solution ? 

Viscosity 

Solubility 

Stability of the colloidal particles 

Size of the colloidal particles

Urea reacts with water to form \(A\) which will decompose to form \(B\) . \(B\) when passed through \(Cu^{2+}\, (aq)\) , deep blue colour solution \(C\) is formed. What is the formula of \(C\) from the following ?

\(CuSO_4\)

\([Cu(NH_3)_4]^{2+} \)

\(Cu(OH)_2\)

\(CuCO_3\cdot Cu(OH)_2\)

Match the following and identify the correct option.

(iii) (i) (ii) (iv)

(iii) (ii) (i) (iv) 

(iii) (iv) (ii) (i) 

(i) (iii) (ii) (iv)

Match the following :

Which of the following is correct option ?

(i) (ii) (iii) (iv) 

(ii) (i) (iv) (iii) 

(iii) (iv) (i) (ii) 

(iv) (iii) (ii) (i)

The rate constant for a first order reaction is \(4.606×10^{−3} s^{−1}\) . The time required to reduce \(2.0 \,g\) of the reactant to \(0.2 \,g\) is :

\(100\, s \)

\( 200 \,s \)

\(500\, s \)

\(1000 \,s\)

An alkene on ozonolysis gives methanal as one of the product. Its structure is :

Which of the following alkane cannot be made in good yield by Wurtz reaction ?

\(n-Hexane \)

\( 2,3-Dimethylbutane \)

\(n-Heptane \)

\(n-Butane\)

Anisole on cleavage with \(HI\) gives :

The weakest among the following acids is

Peroxyacetic acid

Acetic acid 

 Chloroacetic acid 

 Trichloroacetic acid

 Propanoic acid

The nitrosation of  \(N,N\)-dimethylaniline takes place through the attack of electrophile

Nitronium ion

Protonated nitrous acid

 Nitrous acid 

 Nitrite ion 

 Nitrosonium ion

The nitrogeneous base present only in \(RNA\) is

Guanine

 Adenine

Cytosine 

 Uracil

 Thymine

Green fuel is the fuel obtained from

Bio-waste 

 Metal waste 

 Plastic waste

 Chemical waste 

 Electronic waste

Barbiturates are potent

Hypnotics 

 Antimicrobials 

 Antacids 

 Antiseptics

Antiallergics

\(1\,mol \) of \(FeSO_4\,(atomic\, \,weight\,\,of\,\,Fe\,\, is\,55.84\,g\,mol^{-1} )\) is oxidized to \(Fe_2(SO_4)_3\) . Calculate the equivalent weight of ferrous ion

\(55.84\)

\(27.92\)

\(18.61\)

\(111.68\)

\(83.76\)

Mass % of carbon in ethanol is

\(52\)

\(13\)

\(34\)

\(90\)

\(80\)

One mole of ethanol is produced reacting graphite, \(H_2\) and \(O_2\) together. The standard enthalpy of formation is \(-277.7\,kJ\,mol^{-1}\) . Calculate the standard enthalpy of the reaction when \(4\) moles of graphite is involved

\(-277.7\)

\(-555.4\)

\(-138.85\)

\(-69.42\)

\(-1110.8\)

Which of the following process best describes atomization of \(CH_4(g)\) ?

Exothermic 

 Endothermic 

 Non-spontaneous

Spontaneous 

 Both Endothermic and Non-spontaneous

 Consider the equilibrium \(X_2+Y_2\rightleftharpoons P\) . Find the stoichiometric coefficient of the \(P\) using the data given in the following table:

\(1\)

\(2\)

\(3\)

\(0.5\)

\(4\)

Which of the following can help predict the rate of a reaction if the standard Gibbs free energy of reaction \((\Leftarrow G\pi )\) is known?

Equilibrium constant

\(\Leftarrow H\pi \)

\(\Leftarrow U\pi \)

Heat liberated during the course of reaction in calorimeter

Both (Equilibrium constant) and (\(\Leftarrow H\pi \) )

Calculate the molarity of a solution containing \(5g\) of  \(NaOH\)  dissolved in the product of a \(H_2-O_2\) fuel cell operated at \(1A\) current for \(595.1\) hours. (Assume \(1F=96500\,C/mol\) of electrons and molecular weight of \(NaOH\) as \(40g\,mol^{-1}\) )

\(0.05M\)

\(0.025M\)

\(0.1M\)

\(0.075M\)

\(1M\)

If \(1mol\) of \(NaCl\) solute is dissolved into the \(1kg\) of water, at what temperature will water boil at \(1.013\,\) bar?

(\(K_b\) of water is \(0.52K\,\,kg\,\,mol^{-1}\) )

\(373.15K\)

\(373.67K\)

\(374.19K\)

\(373.19K\)

\(375K\)

Consider the electrochemical reaction between \(Ag(s)\) and \(Cl_2(g)\) electrodes in \(1L\) of  \(0.1\,M\,KCl\)  aqueous solution. Solubility product of \(AgCl\) is \(1.8\lambda 10^{-10}\) and \(F=96500\,C/mol\) . At \(1\geq 10^{-6}A\) current, calculate the time required to start observing the \(AgCl\) precipitation in the galvanic cell

\(173s\)

\(346s\)

\(125\lambda10^{6}s\)

\(1.25\lambda10^{5}s\)

\(101s\)

The voltage of the cell consisting of \(Li(s)\) and \(F_2(g)\) electrodes is \(5.92V\) at standard condition at \(298K\) . What is the voltage if the electrolyte consists of \(2M\,LiF\) .

\((ln\,2=0.693,R=8.314JK^{-1}mol^{-1}\,\,and\,F=96500C\,mol^{-1})\)

\(5.90V\)

\(5.937V\)

\(5.88V\)

\(4.9V\)

\(4.8V\)

Consider the galvanic cell. \(Pt(s)\left | H_2(1\,bar) \right |HCl(aq)(1M)\left | Cl_2(1\,bar) \right |Pt(s)\) . After running the cell for sometime, the concentration of the electrolyte is automatically raised to \(3M\,HCl\) . Molar conductivity of the \(3M\,HCl\) is about \(240S\,cm^2mol^{-1}\) and limiting molar conductivity of \(HCl\) is about \(420S\,cm^2mol^{-1}\) . If \(K_b\) of water is \(0.52K\,kg\,mol^{-1}\) , calculate the boiling point of the electrolyte at the end of the experiment

\(375.6K\)

\(376.3K\)

\(378.1K\)

\(380.3K\)

\(381.6K\)

The data given below are for the reaction of  \(A\) and \(D_2\) to form product at \(295K\) . Find the correct rate expression for this reaction

\(k[D_2]^1[A]^2\)

\(k[D_2]^2[A]^1\)

\(k[D_2]^1[A]^1\)

\(k[D_2]^2[A]^2\)

\(k[D_2]^1[A]^0\)

Find the unit of the rate constant of a reaction represented with a rate equation, rate = \(k[A]^\frac{1}{2}[B]^\frac{3}{2}\)

\(mol^{-1}Ls^{-1}\)

\(s^{-1}\)

\(molL^{-1}s^{-1}\)

\(mol^{-2}L^{2}s^{-1}\)

\(mol^{-3}L^{3}s^{-1}\)

Under what condition the order of the reaction,

 \(2HI\rightarrow H_2(g)+I_2(g)\), is zero

At high temperature

At high partial pressure of \(HI\)

At low partial pressure of \(HI\)

At high partial pressure of \(H_2\)

At high partial pressure of \(I_2\)

Which of the following statement is true about the adsorption?

\(\Leftarrow H<0\,and\,\Leftarrow S<0\)

\(\Leftarrow H>0\,and\,\Leftarrow S<0\)

\(\Leftarrow H<0\,and\,\Leftarrow S>0\)

\(\Leftarrow H=0\,and\,\Leftarrow S<0\)

\(\Leftarrow H=0\,and\,\Leftarrow S>0\)

In \(NH_3\) synthesis by Haber’s process, what is the effect on the rate of the reaction with the addition of \(Mo\) and \(CO\) , respectively?

Increases and decreases

Decreases and decreases

Decreases and increases

Both \(Mo\) and \(CO\) increases the rate

Both \(Mo\) and \(CO\) does not affect the rate

Which of the following reactions will not produce \(H_2\) gas

\(Fe + HCl\, dil \)

\(Zn + HCl\, dil \)

\( Cu + HCl\, dil \)

\(Ag + HCl\, dil\)

\(Q\xleftarrow[]{Li\,Al\,H_4}R-C\equiv N\xrightarrow[H_2O/H^+]{R'MgX}P\)

the products P and Q are respectively

\(1 ° - alcohol\,\, and \,\,1° – amine\) 

\(ketone\,\, and\,\, 1 ° - amine\) 

\(aldehyde \,\,and\,\, 1° - alcohol\) 

\( 2° - alcohol \,\,and\,\, 1° - amine\)

The chemical formula of 'Feldspar’ is 

\( K\, Al\, Si_3\, O_8\) 

\(Na_3Al\, F_6 \)

\( Na \,Al\, O_2\)  

\(K_2 SO_4 \cdot Al_2 (SO_4)_3 \cdot 24H_2O\)

An element with a mass number of 81 contains 31.7% more neutrons as compared to protons. Identify the element 

\(Sc \)

\(Ba  \)

\( Br\)

 \( I\)

In which of the following reactions, \(K_P\) is less than \(K_C\)

\(N_2{O_4}_{(g)}\rightleftharpoons 2N{O_2}_{(g)} \)

\(2H{I}_{(g)}\rightleftharpoons {H_2}_{(g)}+{I_2}_{(g)} \)

\(2S{O_2}_{(g)}+{O_2}_{(g)}\rightleftharpoons 2S{O_3}_{(g)} \)

\({N_2}_{(g)}+{O_2}_{(g)}\rightleftharpoons 2N{O}_{(g)}\)

Which of the following can exhibit geometrical isomerism? 

Tetrahedral -\([Zn(NH_3)_2Cl_2] \)

Squareplanar-\([Pt(NH_3)_2Cl_2]\)

Octahedral -\([Co(NH_3)_5Cl]^{+2} \)

Linear - \([Cu(CN)_2]^{-1}\)

The product formed in the following reaction is:

The order of acidity of following acids is:

 ii > iii > iv > i 

iii > ii > i > iv 

iv > ii > iii > i 

iv > iii > ii > i

The molarity of a 9.8% \(\left [ \frac{W}{W} \right ]\) of \(H_2SO_4\) is

1 M 

0.55 M 

0.1 M 

1.1 M

Identify all the compound(s) that are isostructural with \(CO_2\)

(A) \(BeCl_2\) (B) \(SnCl_2\) (C) \(XeF_2\) (D) \(C_2H_2\) 

A, B, C 

A, B, D 

A, C, D 

A, B, C, D

Identify the correct order of equivalent conductance at infinite dilution from the given options 

LiCl > NaCl > KCl 

KCl > NaCl > LiCl 

NaCl > KCl > LiCl 

LiCl>KCl> NaCl

For a van der Waal’s gas, determine Boyle Temperature

[ given \(a = 4.5\, atm \,L^2\,mol^{-2} , b = 0.9\, L\, mol^{-1}\,\, and \,\,R = 0.082 \,L\, atm \,K^{-l} mol^{-1}\) ]

609.8 K 

6.09 K 

273 K 

60.98 K

Calculate the total energy of one mole of an ideal mono atomic gas at \(27^\circ\,C\) 

900 Cal 

1800 Cal 

7482 Cal 

0 Cal

Which of the following compound is an allylic alcohol?

Under which of the following conditions, a real gas shows maximum deviation from the ideal behaviour 

100° C and 2 atm P 

0°C and 2 atm P

 -100° C and 5 atm P 

500°C and 5 atm P

Bhopal gas tragedy was caused by 

 \(CFC \) 

\(CH_3NCO\) 

\(C_2H_3N\) 

\(CH_3CN\)

Duralumin is an alloy of 

Al, Mg and Ni 

Al, Cu, Mg and Mn 

Al, Fe, Ca and Ni 

Al, Ni and Ag

Assertion (A): The conversion of diamond into graphite is an endothermic reaction

Reason (R): The conversion of diamond into graphite is kinetically very slow 

(A) is correct (R) is the correct explanation to (A) 

(A) is wrong (R) is right 

(A) is right (R) is wrong 

Both (A) and (R) are wrong

Calculate the reduction potential at 25° C for \(Fe ^{3+}/Fe^{ 2+}\) electrode if the concentration of \(Fe ^{2+}\) ion is 10 times higher than \(Fe^{3+}\) ion

[Given \(E^0\,_{Fe^{3+}/Fe^{2+}}=0.77\,V\)]

-0 .71 V 

0.71 V

-0.34 V

0.34 V

Which of the following ores are concentrated by Froth Flotation? 

Oxide ores 

Chloride ores 

Sulphide ores 

Nitride ores

The number of atoms in a hcp unit cells is 

4 

8  

12 

6

The Hybridisation of N atom in \(NO_3^-,NO^+_2\) , and \(NH_4^+\) respectively is 

\(sp^2 , sp^3 , sp\) 

\(sp, sp^3 , sp^2\) 

\(sp, sp^2 , sp^3\) 

\(sp^2 , sp, sp^3\)

Calculate the reversible potential of oxygen electrode in a solution of pH = 1, when the partial pressure of \(O_2\) is \(10^{-2}\) atm

[Assume \(E^0_{O_2/H_2O}=1.23V\), vs SHE at 1 atm and 25° C] 

1.19 V 

1.71 V 

1.20 V 

1.112 V

The compounds that are soluble in aqueous NaOH are:

          (i)                       (ii)                        (iii)                           (iv)

(i), (ii) and (iv) 

(i), (iii) and (iv) 

(i), (ii) and (iii) 

(ii), (iii) and (iv)

The mass and charge of one mole of electrons, respectively is

\(54.8 \times 10^{-7} Kg\,;\, 9.65 \times 10^4 \,Coulomb \)

\(5.48 \times 10^{-7} Kg\,;\, 9.65 \times 10^3 \,Coulomb \)

\(5.48 \times 10^{-7} g\,;\, 9.65 \times 10^4 \,Coulomb \)

\(5.48 \times 10^{-7} Kg\,;\, 9.65 \times 10^4 \,Coulomb \)

\( 4Cl{O}^-_{3{(aq)}}\rightarrow 3Cl{O}^-_{4{(aq)}}+{Cl}^-_{(aq)}\) is an example of 

Oxidation reaction 

Reduction reaction 

Decomposition reaction 

Disproportionation reaction

Actinides have higher tendency to form complexes than Lanthanides, due to 

higher charge and smaller size 

smaller charge and larger size 

they are radioactive 

they are electropositive

Which of the following statements is true about a catalyst 

It accelerates reaction by decreasing the free energy of activation 

It will be consumed in the reaction

It makes the reaction feasible by making \(\Delta G^{\circ}\) more negative 

It makes the equilibrium constant of the reaction more favourable for the forward reaction

An alkene that provides only Butanone-2 on ozonolysis is 

3, 4 - dimethylhex - 3 - ene 

2, 3 - dimethylhex - 2 - ene 

3 - methylhex - 3 - ene 

3 - dimethylpent - 2 - ene

How much \(PCl _5\) must be added to a one litre vessel kept at 250° C in order to obtain 0.1 mole of \(Cl_2\) gas [\(K_C\) for \(PCl_{5_{(g)}}\rightleftharpoons PCl_{3_{(g)}}+Cl_{2_{(g)}}\) is 0.0414 mol/L] 

0.0341 mole

0.341 mole 

0.241 mole 

0.024 mole

Which of the following is true with regards to nucleosides

Nucleoside is formed from Nitrogen base + sugar 

Nucleoside is formed from Nitrogen base + sugar + phosphoric acid 

Nucleoside is formed only from Nitrogen base 

Nucleoside is formed from Nitrogen base + amino acid

100 ml of \(KMnO_4\) solution is exactly reduced by 100 ml of 0.5M oxalic acid under acidic condition. The Molarity of \(KMnO_4\) solution is 

0.1 M 

0.2 M 

0.05 M

0.5 M

The half life of a \(I^{st}\) order reaction is 1 min 40 seconds. Calculate its rate constant 

\(6.9 \times 10^{-3} \,min^{-1}\) 

\(6 .9 \times 10^{-3}\, s^{-1}\) 

\(6.9 \times 10^{-3}\, s\) 

\(100 \,s\)

Tubeless tyres arc co-polymers of isoprene and ____________ 

Neoprene 

Silicons 

Isobutylene 

PAN

Calculate the wave number of the highest energy transition in the Balmer series of Hydrogen atom \([R_H = 109678 \,cm^{-1} ]\)

\(27419.5 \,cm^{-1} \)

\( 2741.95\, cm^{-1} \) 

\(274.195\, cm^{-1} \) 

\(274195.1 \,cm^{-1}\)

Consider that the following reaction proceeds via a Carbocation intermediate to give the product

Which of the following energy profiles best represents the overall reaction?

Statement - 1: Acetone + Carbon disulphide solution shows positive deviation from Raoult’s law

Statement - 2: Acetone + Aniline solution shows positive deviation from Raoult’s law 

Both statement -1 and statement - 2 are correct 

Both statement -1 and statement - 2 are wrong 

Statement -1 is correct and statement - 2 is wrong 

Statement -1 is wrong and statement - 2 is correct

The reactivity order of below compounds with KI in acetone is:

iii > iv > ii > i

ii > iii > iv > i 

iv > ii > iii > i 

iv > iii > ii > i

Artificial sweetening agent is prepared from the below strategy. Identify the structure of final product

An isotonic solution will produce an osmotic pressure of 10.00 atm measured against pure water at 37 °C. How many grams of NaCl must be dissolved in one litre of water to produce an isotonic solution? 

11.46g 

0.196 g 

9.01 g 

10 g

Which of the following conditions are correct for real solutions showing negative deviation from Raoult's law?

\(\Delta \,H_{Mix}<0;\Delta V_{Mix}>0 \)

\(\Delta \,H_{Mix}>0;\Delta V_{Mix}>0 \)

\(\Delta \,H_{Mix}>0;\Delta V_{Mix}<0 \)

\(\Delta \,H_{Mix}<0;\Delta V_{Mix}<0\)

Nitration of phenyl benzoate yields the product

The electronic configuration of \(_{59}Pr\) (praseodymium) is

\([_{54}Xe]4\,f^2\,5d^1\,6s^2 \)

\([_{54}Xe]4\,f^1\,5d^2\,6s^2 \)

\([_{54}Xe]4\,f^3\,6s^2 \)

\([_{54}Xe]4\,f^3\,5d^2\)

Which of the following is the most basic oxide ?

\(SO_3\)

 \(SeO_3\)

 \(PoO\)

 \(TeO\)

The element that forms stable compounds in low oxidation state is

 Mg

 Al  

Ga  

Tl

Atomic radius (pm) of Al, Si, N and F respectively is 

117, 143, 64, 74 

143, 117, 74, 64 

143, 47, 64, 74 

64, 74, 117, 143

Reaction of calgon with hard water containing \(Ca^{2+} \) ions produce

\([Na_{2}CaP_6O_{18}]^{2-} \)

\(Ca_2\,(PO_4)_3 \)

\(CaCO_3 \)

\(CaSO_4\)

Which of the following statement is true 

The pressure of a fixed amount of an ideal gas is proportional to its temperature only 

Frequency of collisions increases in proportion to the square root of temperature 

The value of van der Waal’s constant ‘a’ is smaller for ammonia than for nitrogen 

If a as is expanded at constant temperature, the kinetic energy of the molecules decrease

Conversion of esters to aldehydes can be accomplished by 

Stephen reduction 

Rosenmund reduction 

reduction with lithium aluminium hydride 

reduction with diisobutyl aluminium hydride

Consider the following electrode process of a cell,

\(\large Cl^-\rightarrow \frac{1}{2}Cl_2+e^- \)

\(\large [MCl+e^-\rightarrow M+Cl^-]\)

If EMF of this cell is –1.140 V and \(E^0\) value of the cell is –0.55V at 298K, the value of the equilibrium constant of the sparingly soluble salt MCl is in the order of

\(10^{-10}\)

\(10^{-8}\)

\(10^{-7}\)

\(10^{-11}\)

Which of the following is true for spontaneous adsorption of \(H_2\) gas without dissociation on solid surface 

Process is exothermic and \(\Delta S<0\) 

Process is endothermic and \(\Delta S> 0\) 

Process is exothermic and \(\Delta S>0\) 

Process is endothermic and \(\Delta S<0\)

Consider the single electrode process \(4H^++4e^-\rightleftharpoons 2H_2\) catalyzed by platinum black electrode in HCl electrolyte. The potential of the electrode is –0.059V Vs.SHE. What is the concentration of the acid in the hydrogen half cell if the \(H_2\) pressure is 1 bar ? 

1 M 

10 M 

0.1 M 

0.01 M

Which of the following elements has the lowest melting point ? 

Sn 

Pb 

Si 

Ge

The number of complementary Hydrogen bond(s) between a guanine and cytosine pair is 

2 

1 

4 

3

 Given \(\Delta H_f^0 \) for \(CO_{2_{(g)}},CO_{(g)} \) and \(H_2O_{(g)} \) are –393.5, –110.5 and –241.8 \(kJ\,mol^{-1}\) , respectively. The \(\Delta H_f^0 \) [in \(kJ\,mol^{-1}\) ] for the reaction \(CO_{2_{(g)}}+H_{2_{(g)}}\rightarrow CO_{(g)}+H_2{O_{(g)}}\) is 

524.1 

–262.5 

– 41.7 

41.2

Which among the following is the strongest acid? 

HF 

HCl 

HBr 

HI

The species having pyramidal shape according to VSEPR theory is 

\(SO_3\) 

\(BrF_3\) 

\(SiO_3^{2-}\)

\(OsF_2\)

The bonding in diborane \((B_2H_6)\) can be described by  

4 two centre - two electron bonds & 2 three - centre - two electron bonds 

3 two centre - two electron bonds & 3 three centre - two electron bonds 

2 two centre - two electron bonds and 4 three centre - two electron bonds 

4 two centre - two electron bonds and 4 two centre - two electron bonds

The monomers of Buna-S rubber are 

Isoprene and butadiene 

Butadiene and phenol 

Styrene and butadiene 

Vinyl chloride and sulphur

Heating a mixture of \(Cu_2O\) and \(Cu_2S\) will give 

\(CuO + CuS\) 

\(Cu + SO_3\) 

\(Cu + SO_2\) 

\(Cu(OH)_2 + CuSO_4\)

Which of the following corresponds to the energy of the possible excited state of hydrogen? 

– 13.6 eV 

13.6 eV 

-3.4 eV 

3.4 eV

Which of the following are the correct representations of a zero order reaction, where A represents the reactant?

      (a)              (b)              (c)             (d)

a, b, c 

a, b, d 

b, c, d 

a, c, d

The set representing the right order of ionic radius is

\(Li^+>Na^+>Mg^{2+}>Be^{2+} \)

\(Mg^{2+}>Be^{2+}>Li^+>Na^+ \)

\(Na^+>Mg^{2+}>Li^+>Be^{2+} \)

\(Na^+>Li^+>Mg^{2+}>Be^{2+}\)

Which one of the following statement is correct for \(d^4\) ions [P = pairing energy] 

When \(\Delta_0>P\), low-spin complex form 

When \(\Delta_0<P\), low-spin complex form 

When \(\Delta_0>P\), high-spin complex form 

When \(\Delta_0>P\), both high-spin and low-spin complex form

The reactivity of alkyl bromides

Towards iodine ion in dry acetone decrease in the order

D > A > B > C 

A > D > B > C 

C > B > A > D 

C > B > D > A

 Optically active was found to have lost its optical activity after standing in water containing a few drops of acid, mainly due to the formation of 

Commercially available \(H_2SO_4\)  is 98 gms by weight of \(H_2SO_4\) and 2gms by weight of water. It’s density is 1.83 \(g \,cm^{-3}\) . Calculate the molality (m) of \(H_2SO_4\) (molar mass  is 98 \(g\,\, mol^{-1}\) ) 

500 m 

20 molal 

50 m 

200 m

Cylohexylamine and aniline can be distinguished by 

Hinsberg test 

Carbylamine test 

Lassaigne test 

Azo dye test

__________  is a potent vasodilator. 

Histamine

Serotonin 

Codeine 

Cimetidine

Standard Enthalpy (Heat) of formation of liquid water at \(25^\circ C\) is around

\(\large H_{2_{(g)}}+\frac{1}{2}\,O_{2_{(g)}}\rightarrow H_2{O}_{(l)}\) 

-237 kJ/mol 

237 kJ/mol 

-286 kJ/mol 

286 kJ/mol

The alcohol that reacts faster with Lucas reagent is

Balance the following equation by choosing the correct option

\(xKNO_3+y\,C_{12}H_{22}O_{11}\rightarrow pN_2+qCO_2+rH_2O+sK_2CO_3\)

 x     y    p   q    r    s 

36  55  24  24  5  48 
 

 x     y    p   q    r    s

48   5   24 36  55  24           

 x     y    p    q     r    s

24   24  36  55  48   5 

 x     y    p   q    r    s

24  48  36  24  5   55

Which of the following element is purified by vapour phase refining? 

Fe 

Zr 

Cu 

Au

When helium gas is allowed to expand in to vaccum, heating effect is observed. The reason for this is (Assume \(He\) as a non ideal gas) 

\(He\) is an inert gas  

The inversion temperature of Helium is very high 

The inversion temperature of Helium is very low 

\(He\) has the lowest boiling point

The vapour pressure of a non-ideal two component solution is given below

Cyclopentadienyl anion is 

benzenoid and aromatic 

non-benzenoid and aromatic 

non-benzenoid and non-aromatic 

non-benzenoid and anti-aromatic

Oxidation of cyclohexene in presence of acidic potassium permanganate leads to 

glutaric acid 

adipic acid 

pimelic acid 

succinic acid

How many emission spectral lines are possible when hydrogen atom is excited to \(n^{th}\) energy level?

\(\Large \frac{n(n+1)}{2} \)

\(\Large\frac{(n+1)}{2} \)

\(\Large\frac{(n-1)n}{2} \)

\(\Large\frac{n^2}{4}\)

The bond length (pm) of \(F_2, H_2, Cl_2\) and \(I_2\), respectively is 

144,74,199,267 

74,144,199,267 

74,267,199,144 

144,74,267,199

The number of tetrahedral and octahedral voids in CCP unit cell are respectively 

4, 8 

8,4 

12, 6 

6, 12

The energy of an electron in the \(3^{rd}\) orbit of \(H-\)atom (in \(J\) ) is approximately

\(-2.18\times 10^{-18}\)

\(-2.42\times 10^{-19}\)

\(-1.21\times 10^{-19}\)

\(-3.63\times 10^{-19}\)

The wavelength (in \(m\)) of a particle of mass \(11.043\times 10^{-26}kg\) moving with a velocity of \(6.0\times 10^{7}\,ms^{-1}\) is

\(1.0\times 10^{16}\)

\(6.0\times 10^{-16}\)

\(1.0\times10^{-16}\)

\(6.0\times 10^{16}\)

Covalent bond length of chlorine molecule is \( 1.98\, \mathring{A}\). Covalent radius ( in \(\mathring{A}\)) of chlorine atom is

\(1.98\)

\(0.99 \)

\(3.96 \)

\(0.49\)

The covalency  of \(Al\) in \(\left [ AlCl(H_2O)_5 \right ]^{2+}\) is

\(3 \)

\(5 \)

\( 1\)

\(6\)

The correct order of bond angles of the given compounds is

\(NH_3<PH_3<AsH_3<SbH_3\)

\(SbH_3<AsH_3<PH_3<NH_3\)

\(NH_3<AsH_3<SbH_3<PH_3\)

\(PH_3<SbH_3<AsH_3<NH_3\)

The molecular orbital theory supports paramagnetic behaviour of

\(Be_2\)

\(C_2\)

\(N_2\)

\(O_2\)

Which of the following represents van der Waal’s equation for \(n\) moles of the gas ?

\(\left ( P+\frac{a}{V^2} \right )(V-b)=nRT\)

\(P(V-b)=nRT\)

\(\left ( P+\frac{a}{V^2} \right )V=nRT\)

\(PV+\frac{an^2}{V}-\frac{abn^3}{V^2}-Pnb=nRT\)

The kinetic energy in \(J\) of \(1\) mole of \(N_2\) at \(27° C\) is \((R=8.314\,J\,mol^{-1}K^{-1})\)

\(2,494 \)

\(18,706\)

\( 7,482 \)

\(3,741\)

In the titration of \(I_2(aq)\,\,\)by \(S_2O_3^{2-}(aq)\) using the starch indicator, the end point is indicated by

colourless to blue 

blue to colourless 

pink to colourless 

blue to pink​​​​​​​

When \(10\,g\) of \(90\%\) pure limestone is heated, the approximate volume (in \(L\)) of \(CO_2\) liberated at \(STP\) is

\(4.4 \)

\(2.0 \)

\(4.0 \)

\( 22.4\)

At \(298 \,K\), the equilibrium constant of the process \(1.5O_2(g)\rightleftharpoons O_3(g)\) is \(3\times 10^{-29}\)  . Standard free energy change (in \(kJ\,\,mol^{-1}\) ) of the process is approximately \((\,\,\,\,R=8.314\,J\,mol^{-1}K^{-1};log3=0.47)\)

\(724 \)

\( 612 \)

\(247 \)

\(163\)

For a reaction \(2A(g)\rightleftharpoons 2B(g)+C(g)\), \(\,\,K_c=3.75\times 10^{-6}\) at \(1069\,K\) . The approximate value of \(K_p\) for this reaction at the same temperature is \((\,\,R=0.082\,L\,bar\,mol^{-1}K^{-1})\)

\(2.4\times10^{-4}\)

\(3.3\times10^{-4}\)

\(33\times10^{2}\)

\(7.2\times10^{4}\)

The degree of dissociation of \(0.1\,\,N\,\,CH_3COOH\,\,\,\,\) is (given \(K_a=1\times 10^{-5}\) ) approximately

\(1\times10^{-6}\)

\(1\times10^{-7}\)

\(1\times10^{-3}\)

\(1\times10^{-2}\)

Match the reactants in \(List – I\) with the products in \(List – II\)

The correct answer is
Please choose your answer from the right side options

(a) (b) (c) (d)

 (i) (viii) (v) (vi) 

(a) (b) (c) (d)

(iii) (ii) (v) (vii) 

(a) (b) (c) (d)

(iii) (viii) (iv) (vii) 

(a) (b) (c) (d)

(i) (ii) (iv) (vi)

 When sodium \((Na)\) metal is dissolved in liquid ammonia \( (NH_3)\) , it imparts a blue colour to the solution. This blue colouration is due to

liquid \(NH_3\)

\(\left [ Na(NH_3)_x \right ]^+ \)

\(NaNH_2 \)

\(\left [ \bar{e}(NH_3)_x \right ]^-\)

Identify the correct statements from the following:

a) In orthoboric acid, boron is in planar geometry

b) In \(BCl_3. NH_3 ,\) boron has tetrahedral geometry

c) Aqueous solution of borax is acidic

\(a, b \)

\( b, c \)

\(a, c \)

\(a, b, c\)

\(Si\) reacts with \(CH _3Cl\) at \(573 K \) in the presence of \(Cu\) powder to form methyl substituted chlorosilanes. Among the given methyl substituted chlorosilanes, whose yield is minimum ?

\(CH_3SiCl_3 \)

\((CH_3)_2SiCl_2 \)

\((CH_3)_3SiCl \)

\((CH_3)_4Si\)

When vegetation is burnt in the absence of oxygen, which of the following will be formed?

\(CH_4 \)

\(H_2C= CH_2 \)

\(H-C\equiv C-H \)

\(H_3C-CH_3\)

\(IUPAC\) name for the following compound is

\(2-chloro-4ethylpentanal \)

\(2-ethyl-4-chloropentanal \)

\(4-chloro-2-ethylpentanal \)

\(2-chlorohexane-4-al\)

What are the products formed in the reaction given below?

\(Acetic \,acid \,\,and\, \,2-phenyl \,acetic \,acid \)

\(2-phenyl \,ethanal \,\,and \,\,ethanal \)

\(2-phenyl \,ethanol \,\,and \,\,ethanol \)

\(1-phenyl \,butan-2, 3-diol\)

The major product obtained in the reaction of isobutyl benzene with acetic anhydride in the presence of anhydrous \(AlCl_3\) is

p-isobutyl acetiphenone 

acetophenone 

m-isobutyl acetophenone 

o-isobutyl acetophenone

A compound is formed by the elements of \(X, Y \) and \(Z\). Atoms of \(Z\) (anions) make fcc lattice. Atoms of \(X\) (cations) occupy all the octahedral voids. Atoms of \(Y\) (cations) occupy \(\frac{1}{3}\) rd of the tetrahedral voids. The formula of the compound is

\(X_3Y_2Z_3\)

\(X_2YZ\)

\(XY_2Z\)

\(X_2Y_2Z\)

 A litre of sea water (which weights \(1030\, g\)) contains \(6\times10^{-3}\,\,g\) of dissolved oxygen. The concentration of dissolved oxygen in ppm is

\( 5.8 \)

\(6.0 \)

\(6.2 \)

\(6.4\)

At \(300 \,K\) , a one litre solution of sucrose(molecular weight \(:342\)) was prepared by dissolving \(40g\) of sucrose. What is the approximate osmotic pressure (in \(kPa\)) of solution at the same temperature ? \((R=8.314\times 10^{6}\,cm^3PaK^{-1}mol^{-1})\)

\(292 \)

\( 500 \)

\( 292000 \)

\(600\)

The \(EMF \) of a galvanic cell consisting of two hydrogen electrodes is \(0.17\, V\) . If the solution of one electrodes has \(\left [ H^+ \right ]=10^{-3}\,M\), the \(pH\) at the other electrode is?

\(5.88 \)

\(4.88 \)

\(2.08 \)

\(3.08\)

If the rate constants of a reaction at \(500\,\,K \) and \(700\,\,K \) are \(0.002\,s^{-1} \) and \(0.06\,s^{-1} \) respectively, the value of \(K^{-1} \) activation energy is \((R=8.314\,J\,mol^{-1}K^{-1},log3=0.477) \)

\(49.49\,kJmol^{-1} \)

\(98.98\,kJmol^{-1} \)

\(24.75\,kJmol^{-1} \)

\(12.37\,kJmol^{-1}\)

The following graph is obtained for physisorption of a gas as a function of pressure at different temperatures.

The correct order of the temperatures is

\(T_3<T_2<T_1\)

\(T_2<T_3<T_1\)

\(T_2<T_1<T_3\)

\(T_1<T_3<T_2\)

Identify the correct set of sulphide ores from the following.

Fool’s gold, calamine, kaolinite 

Sphalerite, fool’s gold, chalcopyrites 

Copper glance, siderite, malachite 

Bauxite, magnetite, zincite

Identify the reations in which \(N_2\) is liberated

\((a)\, (NH_4)_2 \, SO_4+ NaOH \rightarrow \)

\((b)\,NH_3+Cl_2\rightarrow \)

    \((excess)\)

\((c)\,(NH_4)_2Cr_2O_7\overset{\Delta }{\longrightarrow}\)

\((d)\,NH_4NO_3\overset{\Delta }{\longrightarrow}\)

\((e)\,NH_4Cl(aq)+NaNO_2(aq)\rightarrow \)

\(a, b, c \)

\(c, d, e \)

\(b, c, e \)

\(a, c, d\)

What are \(X\) and \(Y\) , respectively in the following reactions?

\(Au+ \,\,aqua\,\, regia\rightarrow AuCl_4^- + H _2O+X\)

\(Pt+\,\, aqua\,\, regia\rightarrow PtCl_6^{2-}+ H_2 O +Y\)

\(N_2O,NO \)

\(N_2O,N_2O \)

\(NO.NO \)

\(NO.NO_2\)

Which of the following sets correctly represent the increasing paramagnetic property of the ion ?

\(Cu^{2+}<V^{2+}<Cr^{2+}<Mn^{2+}\)

\(Cu^{2+}<Cr^{2+}<V^{2+}<Mn^{2+}\)

\(Mn^{2+}<V^{2+}<Cr^{2+}<Cu^{2+}\)

\(Mn^{2+}<Cu^{2+}<Cr^{2+}<V^{2+}\)

Which of the following molecules/ions can exhibit isomerism?

\(A, B, C, D \)

\(B, C, E\)

\(B, C, D \)

\(A, B, C, E\)

The formation of terylene (or Dacron) from ethylene glycol and terephthalic acid is 

a condensation polymerisation reaction 

an anionic polymerisation reaction 

an addition polymerisation reaction 

a cationic polymerisation reaction

Which of the following carbohydrates has a glycosidic linkage?

Fructofuranose 

Glucopyranose 

Maltose 

\(β-D-\)fructose

Identify an antioxidant, an antiseptic and an antibiotic respectively from the following

 Equanil     Chloramaphenicol     Bithionol

    (A)                   (B)                        (C)

 Aspartme      Dimetapp          Butylated hydroxytoulene

   (D)                    (E)                        (F)

\(A, C, E\)

\(F,C,B\)

\(B, D, E \)

\(C, D, F\)

The major product \((P)\) formed in the following reaction is

The product \((P)\) of the below reaction is

The products \( A, B\) and \(C\) in the following reaction sequence are

Identify A and B in the following reaction

Which product of the following reactions fails to give carbyl amine test?

Hoffmann bromide degradation

Gabriel phthalimide synthesis 

Reduction of nitrites with \(LiAlH_4 \)

Reduction of tertiary amides with \(LiAlH_4\)

The maximum number of electrons that can have the set of quantum numbers, \(\large n=4, \ m_l =0\) and \(\Large m_s= \frac{1}{2}\) is

3

4

5

6

Which of the following has identical e/m values?

An α-particle and deuterium ion

A proton and neutron

An electron and γ-rays

A proton and deuterium ion

The reason for a cation to be smaller than its parent atom is

Repulsion between electrons of outer orbit

Increased electrostatic attraction between nucleus and electrons.

Increase in the mass of cation compared to neutral atom.

Change in the number of protons of cation compared to neutral atom

Arrange the following in decreasing order of radius \(\large S^{2-}, P^{3-},Cl^{-},Ca^{2+},Ar, K^{+}\)

\(\large P^{3-}>S^{2-}>Cl^->Ar>K^+>Ca^{2+}\)

\(\large Cl^{-}>P^{3-}>S^{2-}>Ar>K^+>Ca^{2+}\)

\(\large Ar>P^{3-}>S^{2-}>Cl^->Ca^{2+}>K^+\)

\(\large K^+>Ca^{2+}>Cl^->S^{2-}>P^{3-}>Ar\)

Which of the following compounds has the highest dipole moment (D)?

HBr

\(\large CH_3COCH_3\)

\(\large H_2S\)

\(\large COCl_2\)

Match the following.

The correct match is-

A  B  C  D

IV II   I   V

A   B  C  D

IV  V   II   I

A   B  C  D

II   IV  I  III

A   B    C   D

I    III   IV   V

The nitrogen gas pressure inside a container of volume \(\large 2.6 \ cm^3\) is 2.3 atm at 27°C. The approximate number of moles of nitrogen present in the container is,

\(\large [R= 0.0821 \ L \ atm \ mol^{-1} K^{-1}]\)

\(\large 4 \times 10^{-3}\)

\(\large 1.7 \times 10^{-4}\)

\(\large 4 \times 10^{-4}\)

\(\large 2 \times 10^{-4}\)

Which of the following is not correct regarding kinetic energy of gases?

Gases are considered as point masses.

Kinetic energy of gas molecules increases with temperature.

Total energy of molecules before and after the collisions is different.

The distribution of molecular speed of a gas remains constant at a particular temperature. 

A spherical ball of radius 7 cm contains 56 w% iron. Find out the number of moles of iron present approximately in the ball? (\(\large d=1.4 \ g \ cm^3\), atomic mass \(\large = 56 \ g\ mol^{-1}\) )

15.1

20.1

25.1

35.1

One third liter of x \(\large MK_2Cr_2O_7\) is required to completely oxidize 2 L of 0.1 M ferrous ammonium sulphate in acid medium. What is x?

0.03

0.1

0.2

0.5

Enthalpy change for freezing of 1 g of water at 1 bar and 0°C is 334 J. Calculate the internal energy change in J when 1 g of water is converted into ice.

205

334

0

668

For a chemical reaction, the standard Gibbs energy change, \(\large \Delta G^{\ominus}\) is \(\large -7.64 \times 10^4 \ J \ mol^{-1}\). What is the value of equilibrium constant (K)?

K = 1

K > 1

K < 1

K = 0

Match the following.

List-I (Acid)	List-II (\(\large K_a\))
A)	I) \(\large 1 \times 10^{-13}\)
B)	II) \(\large 3.0 \times 10^{-8}\)
C) HClO	III) \(\large 1.0 \times 10^{-10}\)
D) \(\Large CH_3COOH\)	IV) \(\large 6.5 \times 10^{-5}\)
	V) \(\large 1.75 \times 10^{-5}\)

The correct match is

A   B  C   D

I    II   III   IV

A   B  C   D

III   V  II   I

A   B  C   D

III  IV  II   V

A   B  C   D

I    IV  V   II

The heat of combustion (\(\large kJ \ mol^{-1}\)) is highest for

\(\large H_2(g)\)

\(\large H_2(l)\)

LPG

\(\large CH_4(g)\)

What is the bonding nature in LiCl bond?

Pure ionic

Pure covalent

Coordinate bond

Ionic and covalent

Which of the following statements is/are correct for group 13 elements?

a. Al reacts with dil HCl to liberate \(\large H_2\) gas

b. Al reacts with conc. \(\large HNO_3\) to liberate \(\large H_2\) gas

c. Boron reacts with only acids to liberate \(\large H_2\) gas

d. Anhydrous \(\large AlCl_3 \) reacts with moisture to liberate \(\large H_2\) gas 

b, c, d

a, b, d

a, c

a

If one wants to make methanol out of synthesis gas, what should be the ratio of the gaseous components in the synthesis gas?

1:2

1:1

1:3

3:1

The irritant red haze in traffic and congested placed is due to

\(\large CO_2\)

\(\large O_3\)

\(\large SO_x\) (oxides of sulphur)

\(\large NO_x \) (oxides of nitrogen)

A hydrocarbon with molecular formula \(\large C_4H_6\) undergoes the following reactions:

A. Decolourized molecular bromine.

B. Reacted with HBr.

C. Addition of ozone and then cleavage of the ozonide \(\large Zn/H_2O\) gave the product \(\large C_4H_6O_2\).

Then, the structure of the hydrocarbon is

\(\large CH_3CH_2C\equiv CH\)

The order of stability of below resonance structures is

II > I > III

I > II > III

III > II > I

I > III > II

Match the following.

The correct match is

A  B  C D

V  III  I  II

A  B   C D

III  IV  II  I

A  B  C D

IV  II  V  I

A   B  C D

IV  II   I  V

Calculate the depression in the freezing point of a solution containing 0.1 g of \(\large K_3[Fe(CN)_6]\) in 100 g of \(\large H_2O\)? ( molecular weight of \(\large K_3[Fe(CN)_6]\) = 329; \(\large K_f = 1.86 \ K \ kg \ mol^{-1}\))

0

1.223

0.0226

0.226

A solution of 17.1 w% of sucrose (molar mass = \(\large 342 \ g \ mol^{-1}\)) is isotonic with x w% solution of oxalic acid (molar mass = \(\large 90 \ g \ mol^{-1}\)). Assume the degree of dissociation of oxalic acid as 0.01. What is x ?

9

0.45

4.41

0.90

Consider the systems having liquid-liquid interface, (a) copper wire in silver nitrate solution and (b) silver wire in copper sulphate solution. 

Predict which interface will show spontaneous reaction if 

\(\large E^o_{Cu^{2+}/Cu} = 0.34 \ V\) and \(\large E^o_{Ag^{+}/Ag} = 0.80 \ V\) ?

Copper-silver nitrate interface

Silver copper sulphate interface

There will be no spontaneous reaction

Both interfaces will give spontaneous reaction

The decomposition of \(\large O_3\)(g) follows first order kinetics and is given by:

\(\large O_3(g) \rightarrow O_2(g)+O(g) \)

The rate constant for this reaction is \(\large 1.0 \times 10^{-3} \ s^{-1}\). The initial pressure of  \(\large O_3\)(g) is 100 atm. What will be the partial pressure (in atm) of \(\large O_3,O_2,O\) respectively after 38.38 minutes?

95, 5, 5

10, 90,0

10, 90, 90

10, 0, 90

Identify the correct statements from the following.

(a) A closed vessel containing 90% \(\large CO_2\) and 10% \(\large O_2\) is an aerosol.

(b) Milk is an emulsion.

(c) Smoke is an aerosol.

(d) Peptisation is a method of purification of colloidal solution.

(e) Ultrafilteration is a method of purification of colloidal solution.

(a), (b), (c)

(a), (c), (d)

(b), (c), (e)

(a), (b), (e)

Statement (A): Mg can reduce \(\large Al_2O_3\) above 1350°C.

Statement (B): Al can reduce MgO below 1350°C.

The correct answer is

Both (A) and (B) are wrong.

(A) is correct but (B) is wrong.

(A) is wrong but (B) is correct.

Both (A) and (B) are correct.

Match the following.

The correct answer is

A  B  C   D

I   II   III  IV

A  B   C   D

II  IV  III   I

A   B  C   D

I   IV  III  V

A   B  C   D

II   III  IV  V

\(\large XeF_4\) is a square planar while \(\large XeF_6\) has distorted octahedral structure. What is the correct explanation for this observation?

Both molecules have one lone pair of electrons.

Both molecules have two lone pair of electrons.

\(\large XeF_4\) does not have any lone pair electrons, \(\large XeF_6\) has one lone pair of electrons on Xe.

\(\large XeF_4\) has two lone pair electrons, \(\large XeF_6\) has one lone pair of electrons on Xe.

Match the following. 

The correct answer is 

A  B  C  D

V  II  VI  IV

A  B   C  D

V   I   IV  III

A  B  C  D

VI  I  V  IV

A  B   C  D

IV  II  V  III

The name of the compound (\(\large [Ag(NH_3)_2][Ag(CN)_2]\)) is

dicyanoargentate (I) diammino (I) silver

diamino silver dicyanate

diamine silver (I) dicyanoargentate (I)

silver diamminedicyano argentate

Match the following.

List-I	List-II
A)	II) Crossed linked network
B) Nylon-6,6	II) Elastomer
C) HDP	III) Fibre
D) Melamine-formaldehyde	IV) Ziegler-Natta Catalyst

The correct match is

A  B  C  D

IV III  II  I

A  B  C  D

II  III  IV  I

A   B  C  D

III  II    I  IV

A  B   C  D

I   IV  III  II

Among the following B group vitamins, the deficiency of which one results in convulsions.

\(\large B_6\)

\(\large B_{12}\)

\(\large B_1\)

\(\large B_2\)

Methacetin (4-methoxy-acetanilide) is ……… drug

An antipyretic

Narcotic

An antiseptic

Disinfectant

Identify the correct order of reactivity of the following haloarenes on treatment with NaOH?

c > a > d > b

a > c > d > b

b > d > a > c

b > c > d > a

In the following reaction, the major products are,

Identify the method that gives benzyl alcohol?

Statement (A): Carboxylic acid can be obtained by the reaction of \(\large R-C \equiv N\) with \(\large H_3O^{\oplus}\) under mild reaction conditions.

Statement (B): Hydrolysis of \(\large R-C \equiv N\) in alkaline aqueous medium gives \(\large R-COO^{\ominus}Na^{\oplus}\) and
\(\large NH_3\) as product.

The correct answer is

Both (A) and (B) are correct

Both (A) and (B) are not correct

(A) is correct, but (B) is not correct.

(A) is not correct but (B) is correct.

Benzaldehyde can be converted to Benzonitrile by treatment with

\(\large NH_3\)

\(\large NH_3\) followed by reaction with \(\large C_6H_5SO_2Cl\)

\(\large NH_2OH\) followed by reaction with acetic anhydride

\(\large NH_2OH\)

Two series of spectral lines of atomic hydrogen which do not belong to infrared spectral region are 

Lyman and Paschen 

Balmer and Brackett 

Pfund and Lyman 

Lyman and Balmer

Which of the activities can be compared to the concept of quantisation? 

A car is travelling on the road 

An apple is falling from the tree 

A person can stand on any step of a stair case 

Throwing a playing disc

What will be the IUPAC symbol and name for the element with atomic number 123 ? 

Unt and Unniltrium

Ubq and Unbiquadium

Ubt and Unbitrium 

Unb and Unnilbium

Which of the following statements is incorrect? 

The enthalpy of atomization decreases down a group in s-block elements 

The enthalpy of atomization decreases down a group in p-block elements 

The enthalpy of atomization decreases down a group in d-block elements 

The enthalpy of atomization increases down a group in d-block elements

Find out the correct order of ionic character in the following molecules \((i)\, SO_2,\,(ii)\,K_2O, \,(iii)N_2,\,(iv)\,LiF\) 

(iv)> (ii)> (iii)> (i) 

(iv) > (ii) > (i) > (iii) 

(ii)> (iv)> (i) > (iii) 

(ii)> (iv)> (iii)> (i)

Find out the bond order in \(He_2,He_2^+,O_2\) and \(O_2^+\) respectively 

0, 0.5, 2 and 3 

0.5, 0, 3 and 2 

0, 0.5, 2 and 1 

0, 0.5, 2 and 2.5

One mole of an ideal gas occupies 12 L at 297 °C. What is the pressure of the gas? 

207 kPa 

395 kPa 

395 Pa

207 Pa

4.4 grams of a gas at O °C and 0.82 atm pressure occupies a volume of 2.73 L. The gas can be

\(O_2\) 

CO 

\(NO_2\) 

\(CO_2\)

How many moles of Ammonia are produced by 5 moles of Hydrogen? 

2.3 

8.3 

10.3 

3.3

\(C_2H_4\) can react with \(H_2\) in presence of a catalyst to form \(C_2H_6\) as per the following reaction?

\(C_2H_4(g)+H_2(g)\xrightarrow {catalyst}C_2H_6(g)\) .

The amount of \(C_2H_4\) in grams required to produce 50 grams of \(C_2H_6\) is 

36.44g 

22.18g 

46.67g 

57.11g

For which of the following systems, the difference between ∆H and ∆U is not significant?

(i) Solids

(ii) Gases

(iii) Mixture of gases and liquids

(iv) Liquids

(i) and (iv) 

(i), (iii) and (iv) 

(ii) and (iv) 

(ii) and (iii)

At \(25 °C\) , the ionization constant for anilinium hydroxide is \(5.00 × 10^{-10}\) . The hydrolysis constant of anilinium chloride is 

\( 2.00 ×10^{-5}\) 

\( 4.00 ×10^{−3} \) 

 \(1.50 \times10^{-6}\)

\(2.50\times 10^{-4}\)

For the given equilibrium reaction.

\(2A(g)\rightleftharpoons 2B(g)+C(g)\)

the equilibrium constant (\(K_c\)) at 1000 K is \(4 × 10^{-4}\) . Calculate \(K_p\) for the reaction at 800 K temperature  

0.044 

0.026 

0.33 

1

Hydrogen peroxide is stored away from light because it can get decomposed when exposed to light as  

\(H_2O\) and \(O_2\) 

\(H_2\) and \(O_2\) 

\(H_2O\) and \(H_2\) 

\(H_2O\) and \(O_3\)

Which of the reactions represents "slaking of lime"?  

\(CaCO_3\rightleftharpoons CaO+CO_2\)

\( CaO +CO_2 \rightarrow CaCO _3 \)

\(CaO +H_2O \rightarrow Ca(OH)_2 \)

\(CaO+SiO_2 \rightarrow CaSiO_3 \)

\(H_3BO_3\) is 

Monobasic and weak Lewis acid

Monobasic and weak Bronsted acid 

Monobasic and strong Lewis acid 

Tribasic and weak Bronsted acid

In \(CO_2\) molecule, the hybridizations of carbon and oxygen atoms are respectively 

Carbon Oxygen 

     \(sp\)      \(sp^2\)

Carbon Oxygen 

     \(sp^2\)      \(sp^2\)

Carbon Oxygen 

     \(sp\)      \(sp \)

Carbon Oxygen 

     \(sp^2\)      \(sp^3 \)

The consequence of global warming may be the following 

Decrease in average temperature of the earth 

Melting of Himalayan glaciers 

Eutrophication 

Increased biochemical oxygen demand

Which of the following carbonyl compounds will exhibit enolization?

(i), (ii) and (iii) 

(ii), (iii) and (iv) 

(iii) (iv) and (v) 

(i), (iii) and (v)

The major product formed in the following reaction is \(H_3C-C\equiv C-CH_3+Na\xrightarrow[]{liquid\,\,NH_3}\)

\(H_3C-CH_2-C\equiv C^-Na^+ \)

\(H_3C-C\equiv C- {CH_2}^-Na^+ \)

Which one of the following reactions gives the product with less number of carbon atoms than the starting material?

\(R-X\xrightarrow[]{Na,Ether} \)

\(RCO_2Na\xrightarrow[\Delta ]{NaOH,CaO} \)

\(RCO_2K\xrightarrow[]{Electrolysis} \)

\(R-X\xrightarrow[]{Zn,HCl} \)

\(LiCoO_2\) crystallizes in a rhombohedral structure. Consider a situation where 50 % lithium (Li) is extracted from the lattice. To keep the crystal electrically neutral , change in average oxidation state of Co is 

16. 66 % decrease 

16.66 % increase 

50 % increase 

50 % decrease

The freezing point depression of 0.001 M of \(A_XB_Y[Fe(CN)_6]\) is

\(5.58 × 10^{-3}\) K . If the oxidation state of Fe is 2+ and \(K_f = 1.86\, K\, kg\, mol^{-1}\) , then the total number of possibilities for different types of A and B cations are 

1

2

3

4

When 2.44 grams of benzoic acid (\(C_6H_5COOH\)) dissolved in 25 grams of benzene, it shows depression of freezing point equal to 2.2 K. Molal depression constant of benzene is \(5 .0 \,K\, kg \,mol^{-1}\) . What is the percentage association of acid if it fonns dimer in solution? 

50% 

77% 

95% 

90%

The value of \(E_1^0\) is 

0.76 V 

0.535 V 

0.428 V 

1.12 V

The rate of chemical reaction doubles with every \(10^\circ \,C\) rise in temperature. If the reaction is carried out in the vicinity of \(22^\circ \,C\) , the activation energy of the reaction is (Given \(R=8.3 \,J \,K^{-1}\, mol^{-1}\), ln 2=0.69 and In 3= 1.1) 

1. 69 \(kJ\, mol^{-1}\) 

0.169 \(kJ\, mol^{-1}\) 

49.8 \(kJ\, mol^{-1}\) 

498 \(​​J\,mol^{-1}\)

In an adsorption experiment, a graph between \(log\left (\Large \frac{x}{m} \right )\) vs log P was found to be linear with a slope of \(45^\circ\) . The intercept on the \(log\left (\Large \frac{x}{m} \right )\) axis was found to be 0.3. The amount of the gas adsorbed per gram of charcoal under a pressure of 1 atm is  

1 

2 

3 

4

Ellingham diagram is drawn between 

Change in potential and pH 

Change in free energy and oxidation state 

Change in free energy and temperature 

Change in free energy and polarizability

Brown ring test is to detect the presence of

\(NO_3^ −\) 

\(Cl ^− \)

\(I^-\) 

\(Br^ −\)

Oxidation state of S in \(H_2S_2O_8\) is 

8 

6 

4 

7

Which of the following sets correctly represents the increase in the paramagnetic property of the ions? 

\(Cu^{2+} < V^{2+} < Cr^{2+} < Mn^{2+} \) 

\(Cu^{2+} < Cr^{2+}< V^{2+} < Mn^{2+}\) 

\(Mn^{2+} < V^{2+} < Cr^{2+} < Cu^{2+}\) 

\(Mn^{2+}<Cu^{2+}<Cr^{2+}<V^{2+}\)

The coordination complex \([Co(OH_2)_6]^{ 2+}\) has one unpaired electron, which of the following statements are true?

(i) The complex is octahedral.

(ii) The complex is an outer orbital complex.

(iii) The complex is diamagnetic. 

(i) and (iii) only 

(i), (ii) and (iii) 

(i) and (ii) only 

(ii) and (iii) only

Which one of the following is made by using step growth polymerization?

Nylon 6, 6 

Teflon 

Rubber 

Neoprene

Insulin and glucogen, which are responsible to maintain the blood glucose level, fall under 

Antibodies 

Hormones 

Enzymes 

Transport agents

Which one of the following statements is "not correct" about cationic detergents? 

Cationic detergents are quaternary ammonium salts 

Cationic part contains a long hydrocarbon chain 

Cationic detergents exhibit germicidal properties 

Cationic detergents are cheap and are widely used

Which one of the following will be most reactive for \(S_N1\) reaction?

Which of following alcohols gives white turbidity almost immediately with the Lucas reagent at room temperature?

(i) n-Butanol

(ii) tertiary-Butanol

(iii) Benzyl alcohol

(iv) Allylic alcohol 

(i), (ii) and (iii) 

(i), (iii) and (iv) 

(ii), (iii) and (iv) 

(i), (ii) and (iv)

Which one among the following reaction products gives iodoform test? 

\(CH_3CH_2CH_2C\equiv N\xrightarrow[(ii)H_3O^+]{(i)C_6H_5MgBr} \)

\((C_6H_5)_2Cd\xrightarrow[]{CH_3COCl} \)

\(CH_2= CHCH_2CH(OH)C_6H_5\xrightarrow[]{PCC} \)

\(C_6H_5CH_2CN \xrightarrow[(ii)H_3O^+]{(i)C_2H_5MgBr}\)

The major products P and Q in the following reaction sequence are

Which one of the following compounds undergoes Hoffmann degradation reaction? 

\(CH_3CN \)

\(CH_3CONHCH_3 \)

\(CH_3CONH_2 \)

\(CH_3NC\)

The number of regions , where the probability density of electrons is reduced to zero for 3s atomic orbital is 

1 

2 

3 

0

For which of the following species, the electronic transition from n = 5 state to n = 2 state will produce the shortest wavelength in nm? 

\(H^+\)

H 

\(Li^{+2} \)

\(Be^{+3}\)

Identify the correct order of electronegativity for Mg, B, Si and S. 

B > Si > S > Mg 

S > B > Si> Mg 

B > S > Mg > Si

Mg > Si > B > S

What is the correct order ot atom radii of the following atoms?

Be > Sr > Ca > Mg

Sr > Be > Ca > Mg

Sr > Mg > Ca > Be

Sr > Ca > Mg > Be

Which of the following molecules has permanent dipole moment?

\(BF_3 \)

\(BeF_2 \)​​​​​​​

\(CO_2 \)

\(SO_2 \)

Which of the following molecules doesn't exist according to Valence Bond Theory?

\(H_2\)

\( H_2^+\)

\(CH_4 \)

\(H_2O \)

The van der Waals constant 'a’ is the measure of intermolecular force of attraction in a gas. The correct decreasing order of 'a’ for the given set of molecules is

\(N_2>H_2>NH_3>CO_2 \)

\(H_2> N_2>CO_2>NH_3 \)

\( NH_3 >CO_2> N_2>H_2 \)

\(CO_2>NH_3>N_2>H_2\)

Suppose that, 300 gm of \(C_2H_6\) (g) is confined in a 5 L container at 27 °C. Calculate the pressure exerted by ethane from van der Waals equation of state? \(a = 5.0\,\, dm^6\,\, atm \,\,mol^{-2}\) , \(b = 0.09\,\, dm^3\, mol^{-1}\) 

60 atm 

50 atm 

40 atm 

30 atm

Molality is defined as

Number of moles of solute in 1 kg of solvent 

Number of moles of solute in 100 g of solvent  

Number of moles of solute in 100 moles of solvent 

Number of moles of solute in one litre of solvent

One mole of dioxygen gas at STP is equal to 

\(6.022 × 10 ^{23 }\) atoms of oxygen 

32 g of dioxygen 

16 g of dioxygen 

\( 1.2 × 10 ^{24}\) molecules of dioxygen

How much heat will be absorbed by 1 mole of an ideal gas, if it is expanded reversibly from 5 L to 25 L at 27 °C?

(log 3 = 0.5, log 4 = 0.6, log 5 = 0.7) 

50 L atm 

29 L atm 

40 L atm 

60 L atm

\(K_1 , K_2\) and \(K_3\) are the equilibrium constants for the following reactions (i) (ii) and (iii) respectively. 

(i)  \(H_2(g)+I_2(g)\rightleftharpoons 2HI(g) \)

(ii) \(2HI(g)\rightleftharpoons H_2(g)+I_2(g)\)

(iii) \( {\Large\frac{1}{2}}H_2(g)+{\Large\frac{1}{2}}I_2(g)\rightleftharpoons HI(g) \)

Choose the correct relation between \(K_1,K_2\) and \(K_3\)

\(K_1=K_2=K_3\)

\( K_1={\Large\frac{1}{K_2}}=K_3\)

\( K_1={\Large\frac{1}{\sqrt {K_2}}}=K_3 \)

\(K_1={\Large\frac{1}{K_2}}=K_3^2 \)

Five moles of \(NH_3 (g)\) in a sealed vessel, dissociates as

\(2NH_3(g)\rightleftharpoons N_2(g)+3H_2(g) \)

4 

3 

2 

1

In reference to water, choose the correct statement

(i) It gets oxidised to \(O_2\) during photosynthesis.

(ii) It gets reduced to \(H_2\) by highly electropositive metal.

(i) is Correct 

(ii) is correct  

Both (i) and (ii) are correct 

Both (i) and (ii) are incorrect

Which of the following metal hydroxides is amphoteric?

\(Be(OH)_2\)

\( Mg(OH)_2 \)

\(Ca(OH)_2 \)

\(Ba(OH)_2 \)

Which of the following molecules does not exist as monomer in its major form? 

\(BF_3\) 

\(BCl_3\) 

\(BBr_3\) 

\(BH_3\)

In diamond, the hybridization of each carbon atom is

\(sp^3 \)d

\(sp^2\) 

\(sp^3\) 

\(sp\)

UV radiation from the Sun causes a reaction in the Earth’s atmosphere that leads to the production of 

Fluorides 

Carbon monoxide 

Sulphur dioxide 

ozone

When nitrogen and chlorine containing organic compound is reacted with sodium metal, it forms 

\(NaNH_2\) and NaCl 

NaCN and NaCl 

NaNC and NaCl 

NaCN and NaOCl

The major product in the following reactions is

\(C_6H_5-C\equiv CH\xrightarrow[(ii)HI(1\,eq)]{(i)HCl(1\,eq)} \)

\(C_6H_5-CH_2-CHIC l \)

\(C_6H_5-CHI-CH_2C l \) 

\(C_6H_5-CHCl-CH_2I\)

What are the possible final products in the following reaction? \( CH_3CH_2CH=CH_2\xrightarrow[]{KMnO_4/H^+}\) 

\(CH_3CH_2CHO\) and \(HCHO\) 

\(CH_3CH_2COOH \) and \(HCOOH\) 

\(CH_3CH_2CHO\) and \(HCOOH\) 

\(CH_3CH_2COOH \), \(CO_2\) and \(H_2O\)

The density of a solid X is \(1.5 \,g/cm^3\) at \(-250 °C\). If the atoms are assumed sphere of radius \(2.0\mathring{A}\) , the percentage of solid having empty space is (Given atomic weight of \(X = 60\, g\, mol^{-1}\) ) 

21 

50 

14 

89

Which of the following mixtures shows negative deviation from Raoult s law? 

Acetone and carbon disulphide 

Acetone and ethyl alcohol 

Acetone and benzene 

Acetone and chloroform

180 g of glucose \(C_6H_{12}O_6\) is dissolved in 1 kg of water in a saucepan. At what temperature the solution will boil at 1.013 bar? (Kb for Water is 0.52 K kg \(mol^{-1}\) ) 

100.00 \(^\circ C\) 

100.26 \(^\circ C\) 

101.52 \(^\circ C\) 

100.52 \(^\circ C\)

0.804 A current is passed through an aqueous solution of NaCl for 10 minutes. The volume of 0.05 \(N H_2SO_4\) needed to neutralize the base is 

25 mL 

100 mL 

200 mL 

50 mL

If a catalyst drops the activation energy of a reaction at 27 °C from 100 kJ/mol to 42. 73 kJ/mol. The magnitude of the effect on forward and backward reaction is 

Both increases by \(10^{10}\) times 

Both decreases by \(10^{10}\) times 

Both increases by \(10^5\) times