Number of possible alkynes with formula  C\(\large _{5}\) H\(\large _{8}\) is

4

2

5

3

Glycogen is

structurally very much similar to amylopectin

a polymer of

structurally similar to amylopectin but extensively branched

a structural polysaccharide

How many ions per molecule are produced in the solution when Mohr salt is dissolved in excess of water?

6

4

10

5

Which of foiiowing curve is in accordance With Freundlich adsorption isothrem?

On heating potassium permanganate, one of the following compound is not obtained :

MnO\(\large _{2}\)

O\(\large _{2}\)

K\(\large _{2}\)MnO\(\large _{4}\)

MnO

The salt which responds to dilute and concentrated H\(\large _{2}\)SO\(\large _{4}\)  is

Na\(\large _{2}\)SO\(\large _{4}\)

CaF\(\large _{2}\)

Na\(\large _{2}\)PO\(\large _{4}\)

Ba(NO\(\large _{3}\))\(\large _{2}\)

Half life period of a first order reaction is 10 min. Starting with initial concentration 12 M. the rate after 20 min is
 

0.0693 x 3 M min\(\large ^{-1}\)

0.0693 M min\(\large ^{-1}\)

0.0693 x 4 M min\(\large ^{-1}\)

0.693 x 3 M min\(\large ^{-1}\)

Which of the following aqueous solution has the highest freezing point ?

0.1 M NaCl

0.1 M Sucrose

0.01 M  Na\(\large _{2}\) SO\(\large _{4}\)

0.01 M NaCl

0.30 g of an organic compound containing C, H and Oxygen on combustion yields 0.44 g  CO\(\large _{2}\) and 0.18 g H\(\large _{2}\) O. If one mol of compound weighs 60, then molecular formula of the compound is

C\(\large _{4}\)H\(\large _{6}\)O

CH\(\large _{2}\)O

C\(\large _{2}\)H\(\large _{4}\)O\(\large _{2}\)

C\(\large _{3}\)H\(\large _{8}\)O

For one of the element various successive ionization enthalpies (in kJ mol\(\large ^{-1}\) ) are given below :

The element is

Al

Si

Mg

P

The aqueous solution of following salt will have the lowest pH :

NaClO\(\large _{2}\)

NaClO\(\large _{3}\)

NaClO\(\large _{4}\)

NaClO

One of the following is an essential amino acid.

Isoleucine

Tyrosine

Serine

Cysteine

The formation of cyanohydrin from a ketone is an example of

Electrophilic addition

Nucleophilic substitution

Electrophilic substitution

Nucleophilic addition

100 cm\(\large ^{3}\) of 1 M CH\(\large _{3}\)COOH was mixed with 100 cm\(\large ^{3}\) of 2 M CH\(\large _{3}\)OH to form an ester. The change in the initial rate if each solution is diluted with equal volume of water would be

0.5 times

2 times

0.25 times

4 times

How many Coulombs of electricity are required for the oxidation of one mol of water to dioxygen?

\(\large 1.93\: \: \times\: \: 10^{5}C\)

\(\large 9.65\: \: \times\: \: 10^{4}C\)

\(\large 19.3\: \: \times\: \: 10^{5}C\)

\(\large 1.93\: \: \times\: \: 10^{4}C\)

Cheilosis and digestive disorders are due to the deficiency of

Riboflavin

Thiamine

Pyridoxine

Ascorbic acid

One of the following amide will not undergo Hoffmann bromamide reaction :

\(\large C_{6}H_{5}CONH_{2}\)

\(\large CH_{3}CONH_{2}\)

\(\large CH_{3}CH_{2}CONH_{2}\)

\(\large CH_{3}CONHCH_{3}\)

lodoform can be prepared from all, except

propan-l-ol

propan-2-ol

acetophenone

butan-2-one

The arrangement of following compounds :
i. bromomethane
ii. bromoform
iii. chloromethane
iv. dibromomethane
In the increasing order of their boiling point is

ii < iii < i < iv

iii < i < iv < ii

i < ii < iii < iv

iv < iii < i < ii