The wavelength of a microscope particle of mass \(\large 9.1 \times 10^{-31}\) kg is 182 nm, its kinetic energy in J is

(\(\large h= 6.625 \times 10^{-34} J \ s\))

\(\large 7.28 \times 10^{-23}\)

\(\large 7.28 \times 10^{-24}\)

\(\large 3.64 \times 10^{-23}\)

\(\large 3.64 \times 10^{-24}\)

The energy of an electron in an orbit of hydrogen like ion with an orbit radius of 52.9 pm in J is (ground state energy of electron in hydrogen atom is \(\large -2.18 \times 10^{-18}\) J)

\(\large -4.36 \times 10^{-18}\)

\(\large -1.09 \times 10^{-17}\)

\(\large -8.72 \times 10^{-18}\)

\(\large -6.54 \times 10^{-18}\)

In which of the following the electron gain enthalpy of elements is correctly arranged?

S>Se>Te>O

F>Cl>Br>I

Na>Li>K>Pb

O>S>Se>Te

Which of the following orders are correct against the property given?

I) Dipole moment             \(\large NF_3 > NH_3 > BF_3\)

II) Covalent bond length   C-O > N-O > O-H

III) Bond order                  \(\large C_2 >B_2> He_2\)

I, II only

II, III only

I, III only

I, II, III

The molecule/ion having diamagnetic nature and a bond order of 1.0 is

\(\large He_2 ^+\)

\(\large Li_2 ^+\)

\(\large B_2 \)

\(\large C_2 \)

If the kinetic energy of \(\large O_2 \) gas is 4.0 \(\large kJ \ mol^{-1}\), its RMS speed in \(\large cm \ s^{-1}\) is

\(\large 5.0 \times 10^2\)

\(\large 5.0 \times 10^3\)

\(\large 5.0 \times 10^4\)

\(\large 5.0 \times 10^{-4}\)

The volume of 0.02 M acidified permanganate solution required for complete reaction of 60 mL of 0.01M \(\large I^{-}\)
ion solution to form \(\large I_2\) in mL is

60

20

40

6

6 g of graphite is burnt in a bomb calorimeter at 25 °C atm pressure. The temperature of water increased from 25 °C to 31 °C. If \(\large \Delta H\) of this reaction is −248\(\large kJ \ mol^{-1}\). Find out \(\large C_V\) (in \(\large kJ \ K^{-1}\)) of bomb calorimeter.

20.667

41.33

1488

0.145

In which of the following, the solubility of AgCl will be minimum?

0.1M \(\large KNO_3\)
 

0.1M KCl

0.2 M \(\large KNO_3\)

Water

The number of species of the following that can act both as Bronsted acids and bases is \(\large HCl, ClO_4 ^-, ^{-}OH, H^+, H_2O, HSO_4^-, SO_4^{2-},H_2SO_4,Cl^{-}\)

4

3

1

2

Which one of the following properties has same value for \(\large H_2 \) and \(\large D_2 \) ?

density

enthalpy of bond dissociation

bond length

melting point

Identify the correct statements from the following.

I) Tendency to form halide hydrates gradually increases from Be to Ba down the group.

II) Tendency to form stable super oxides increases from Li to Cs down the group.

III) Low solubility of LiF is due its high lattice energy.

IV) Solubility of carbonates of group-2 elements increases down the group.
 

 I, II

III, IV

II, III

I, III

Which of the following metals exist in liquid state during summer season?

Ga

Al

Pb

Sn

Formic acid is heated with conc. \(\large H_2SO_4\) at 100 °C to form A and B. When \(\large Fe_2O_3\) is heated strongly with B, the products formed are C and D. C can also be obtained by reacting \(\large CaCO_3\) with dil HCl. What is D?

Fe

CO

\(\large CO_2\)

\(\large Fe_3O_4\)

The non-biodegradable waste formed in fertilizer industries is

fly-ash

Carbon monoxide

gypsum

lead

Which one of the following has maximum number of hybrid orbitals?

\(\large C_6 H_6\)

\(\large (CH_3)_4 C\)

\(\large (CH_3)_2 C = O\)

\(\large CH_3-CH=CH-CN\)

In Dumas method, one gram of carbon compound gives 50 mL of \(\large N_2\) N at 300 K and 740 mm Hg pressure. If the aqueous tension at 300 K is 15 mm Hg, what is the percentage of nitrogen in it? 

5.42

10.84

21.68

2.71

Sodium acetate was electrolysed by Kolbe’s method to form two gases A and B at anode. C and D are formed when B is heated with regulated supply of  \(\large O_2\) or air in the presence of  \(\large (CH_3COO)_2Mn\) . C reacts with NaOH to form a salt. A and D are respectively.

\(\large CO_2, CH_3COOH\)

\(\large CO_2, H_2O\)

\(\large C_2H_6, H_2O\)

\(\large CO_2, H_2O_2\)

What are Y and Z in the following reaction sequence?

                 Y                      Z

\(\large NaOH/CaO\)       \(\large CH_3(CH_2)_2CH_3\)

                 Y                                   Z

\(\large NaOH/electrolysis\)       \(\large H_3C-CH_3\)

                 Y                      Z

\(\large NaOH/CaO\)       \(\large H_3C-CH_3\)

                 Y                                 Z

\(\large NaOH/electrolysis \)       \(\large CH_3(CH_2)_2CH_3\)

At T(K) copper (atomic mass= 63.5 U) has fcc unit cell structure with edge length of x Α. What is the approximate density of Cu in \(\large g \ cm^{-3}\) at that temperature? 

(\(\large N_A = 6.0 \times 10^{23} \ mol^{-1}\) )

\(\Large \frac{42.3}{x^3}\)

\(\Large \frac{4.23}{x^3}\)

\(\Large \frac{423}{x^3}\)

\(\Large \frac{212}{x^3}\)

The number of moles of solute present in the solution of I, II and III is respectively.

I) 500 mL of 0.2 M NaOH

II) 200 mL of 0.1N \(\large H_2SO_4\)

III) 6g of urea in 1kg of water

0.1, 0.01, 0.1

0.1, 0.02, 0.1

0.2, 0.01, 0.1

0.1, 0.01, 0.2

6 g of a mixture of naphthalene (\(\large C_{10}H_8\)) and anthracene (\(\large C_{14}H_{10}\)) is dissolved in 300 g of benzene. If the depression in freezing point is 0.70 K, the composition of naphthalene and anthracene in the mixture respectively in g are (molal depression constant of benzene is \(\large 5.1 \ K \ kg \ mol^{-1}\) )

2.60, 3.40

3.40, 2.60

2.90, 3.10

3.10, 2.90

Under which of the following conditions E value of the cell for the cell reaction given is maximum?

\(\large Zn_{(s)} + Cu^{2+} _{(aq)} \rightleftharpoons Cu_{(s)} + Zn^{2+} _{(aq)}\)

(\(\Large \frac{2.303 \ RT}{F} \) at 298K = 0.059 V, \(\large E^0_{Zn^{2+}|Zn} = -0.76 \ V, E^0_{Cu^{2+}|Cu} = +0.34 \ V\) )

\(\large C_1\) = 0.1 M, \(\large C_2\) = 0.01 M

\(\large C_1\) = 0.01 M, \(\large C_2\) = 0.1 M

\(\large C_1\) = 0.1 M, \(\large C_2\) = 0.2 M

\(\large C_1\) = 0.2 M, \(\large C_2\) = 0.1 M

In the first thermal decomposition of \(\large C_2H_5I_{(g)} \rightarrow C_2H_{4(g)} + HI_{(g)}\) the reactant in the beginning exerts a pressure of 2 bar in a closed vessel at 600 K. If the partial pressure of the reactant is 0.1bar after 1000 minutes at the same temperature the rate constant in \(\large min^{-1}\) is 

(log 2 = 0.30)

\(\large 6.0 \times 10^{-4}\)

\(\large 6.0 \times 10^{-3}\)

\(\large 3.0 \times 10^{-3}\)

\(\large 3.0 \times 10^{-4}\)

Identify the correct statements from the following.

I) Sulphur sol is an example of multimolecular colloid.

II) Tyndall effect is observed when the diameter of the dispersed particles is not much smaller than the wavelength of the light used.

III) The process of removing a dissolved substance from a colloidal solution by means of diffusion through a suitable membrane is called peptization.

IV) Eosin, gelatin are examples of negatively charged sols.

I, II, III

I, II, IV

I, III, IV

II, III, IV

Which of the following are carbonate ores?

I) Magnetite

II) Kaolinite

III) Siderite

IV) Calamine

I, II, III

II, III, IV

I, II only

III, IV only

Which of the following statements is not correct?

From \(\large SO_2\) to \(\large TeO_2\) reducing power decreases 

The order of boiling points of hydrides of \(\large 16^{th}\) group elements is \(\large H_2S<H_2Se<H_2Te<H_2O\)
 

Rhombic sulphur has \(\large S_8\) molecules while monoclinic sulphur has \(\large S_6\) molecules.

The bond angle in Ozone molecule is 117°.

Nobel metals like gold and platinum are soluble in which of the following mixtures?

1:1 mixture of conc. \(\large HNO_3\) and conc. \(\large H_2SO_4\)

1:3 mixture of conc. \(\large HCl\) and conc. \(\large HNO_3\)

1:3 mixture of conc. \(\large HNO_3\) and conc. \(\large HCl\)

1:3 mixture of conc. \(\large H_2SO_4\) and conc. \(\large HCl\)

Identify the set of acidic oxides.

\(\large Na_2O, CaO,BaO\)

ZnO, PbO, BeO

\(\large CO, NO, N_2O\)

\(\large Mn_2O_7, CrO_3, V_2O_5\)

The wavelength of the light absorbed by the complexes \(\large [Ni(H_2O)_6]^{2+} . [Ni(en)_3]^{2+} . [Ni(H_2O)_4 en]^{2+}\) are \(\large \lambda_1, \lambda_2, \lambda_3\) respectively. The correct order of wavelengths is

\(\large \lambda_1 > \lambda_2 > \lambda_3\)

\(\large \lambda_3 > \lambda_2 > \lambda_1\)

\(\large \lambda_1 > \lambda_3 > \lambda_2\)

\(\large \lambda_2 > \lambda_3 > \lambda_1\)

\(\large KMnO_4\) oxidizes \(\large S_2O_3^{2-}\) to \(\large SO_4^{2-}\) in medium x and \(\large NO_2^{-}\) to \(\large NO_3^{-}\) in medium y. x and y are respectively.

acidic, basic

acidic, acidic

acidic, neutral

neutral, acidic

Match the following

     List-I                                   List-II

A) Teflon                               I) \(\large SnCl_2\)

B) Anionic polymerisation     II) \(\large C_2F_4\)

C) Cationic polymerisation   III) Bakelite

D) Thermosetting polymer   IV) Polystyrene

                                              V) RLi

A   B   C   D

II    I    V   III

A   B   C   D

II    V   I     IV

A   B   C   D

II    V   I    III

A   B   C   D

V   II    I    IV

Identify the correct set of monosaccharides present in sucrose (X), lactose (Y) and maltose (Z).

            X                                 Y                            Z

glucose, fructose     galactose, glucose     glucose, fructose

            X                                 Y                            Z

glucose, fructose     galactose, glucose     glucose, glucose

            X                                 Y                            Z

glucose, glucose     galactose, glucose     glucose, glucose

            X                                 Y                            Z

galactose, glucose     glucose, fructose      glucose, glucose

Which of the following are broad spectrum antibiotics?

Penicillin G     Chloramphenicol     Ofloxacin     Ampicillin

      I                            II                        III                 IV

I, II only

I, II, III

II, III, IV

I, III only

Arrange the following organic halides in correct order of reactivity towards \(\large S_N2\) displacement.

\(\large (CH_3)_2C(Br)CH_2CH_3\)     \(\large BrCH_2(CH_2)_3CH_3\)     \(\large CH_3CH(Br)(CH_2)_2CH_3\)

                (P)                                            (Q)                                        (R) 

P > Q > R

R > P > Q

P > R > Q

Q > R > P

The bond angle between C-O and O-H bonds in alcohols is close to

109°

120°

180°

90°

Identify Z in the following sequence of reactions.

Identify X, Y, Z in the following reaction sequence.

2-Methyl 2- butane on hydration gave an alcohol X. Isomer of X could be prepared from which of the following?

Acetic acid on heating with \(\large NH_3\) forms A. When A reacts with \(\large LiAlH_4\) followed by hydrolysis gives B. When B is heated with chloroform in KOH medium gives C. What are B and C respectively?

\(\large CH_3CONH_2, CH_3CH_2NC\)

\(\large CH_3CH_2NH_2, CH_3CH_2NC\)

\(\large CH_3CH_2NH_2, CH_3COOH\)

\(\large CH_3CH_2CH_2NH_2, CH_3CH_2NC\)