On account of the disruption in education due to the corona pandemic, we're opening up our platform for teachers, free of cost. Know More →

JEE Advanced > Hydrogen

Explore popular questions from Hydrogen for JEE Advanced. This collection covers Hydrogen previous year JEE Advanced questions hand picked by experienced teachers.

Q 1.

Correct4

Incorrect-1

{tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } \rightarrow \mathrm { H } _ { 2 } \mathrm { O } + \mathrm { O } _ { 2 } {/tex}
This represents

A

Oxidation of {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex}

B

Reduction of {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex}

Disproportionation of {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex}

D

Acidic nature of {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex}

Q 2.

Correct4

Incorrect-1

{tex} \mathrm { Ag } _ { 2 } \mathrm { O } + \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } \rightarrow 2 \mathrm { Ag } + \mathrm { H } _ { 2 } \mathrm { O } + \mathrm { O } _ { 2 } {/tex}
In an above reaction {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} acts as/an

A

Oxidizing agent

Reducing agent

C

Bleaching agent

D

None of these

Q 3.

Correct4

Incorrect-1

In the following reaction,
{tex} \mathrm { Cr } _ { 2 } \mathrm { O } _ { 7 } ^ { 2 - } + \mathrm { H } ^ { + } + \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } \rightarrow {/tex}

{tex} \mathrm { CrO } _ { 5 } {/tex} is formed

B

{tex} \mathrm { Cr } ^ { 3 + } {/tex} is formed

C

{tex} \mathrm { Cr } \mathrm { O } _ { 4 } ^ { 2 - } {/tex} is formed

D

No effect of {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex}

Explanation

Q 4.

Correct4

Incorrect-1

How does {tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} differ from {tex} \mathrm { O } _ { 3 } {/tex} in its chemical action?

A

In oxidizing {tex}\mathrm{PbS}{/tex} to {tex}\mathrm{PbSO_4}{/tex}

B

In librating {tex} \mathrm { I } _ { 2 } {/tex} from {tex}\mathrm{KI}{/tex}

In decolorizing acidified {tex}\mathrm{KMnO_4}{/tex}

D

In oxidizing {tex} \mathrm { K } _ { 4 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] {/tex} to {tex} \mathrm { K } _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] {/tex}

Explanation

Q 5.

Correct4

Incorrect-1

Select the incorrect statement

A

{tex} \mathrm { H } ^ { + } {/tex} can exist as {tex} \mathrm { H } _ { 9 } \mathrm { O } _ { 4 } ^ { + } {/tex} in water

B

{tex} \mathrm { H } _ { 2 } {/tex} is thermally stable

Ionisation of {tex} \mathrm { CH } _ { 3 } \mathrm { COOH } {/tex} is slower than that of {tex} \mathrm { CH } _ { 3 } \mathrm { COOD } {/tex}

D

Kinetic isotopic effect is observed when there is retardation in the rate water {tex} \mathrm { H } _ { 2 } \mathrm { O } {/tex} is replaced by {tex} \mathrm { D } _ { 2 } \mathrm { O } {/tex}

Q 6.

Correct4

Incorrect-1

Hard water is not fit for washing clothes because

A

It contains impurities

B

It is acidic in nature

It gives precipitate with soap

D

It contains {tex} \mathrm { Na } _ { 2 } \mathrm { SO } _ { 4 } {/tex} and {tex} \mathrm { KCl } {/tex}

Q 7.

Correct4

Incorrect-1

Electron deficient hydride is/are

A

{tex} \mathrm { BH } _ { 3 } {/tex}

B

{tex} \mathrm { AlH } _ { 3 } {/tex}

C

{tex} \mathrm { BeH } _ { 2 } {/tex}

All of these

Q 8.

Correct4

Incorrect-1

{tex} \mathrm { H } _ { 2 } \mathrm { O } _ { 2 } {/tex} is manufactured these days by

A

The action of {tex} \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex} on {tex} \mathrm { BaO } _ { 2 } {/tex}

B

The action of {tex} \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex} on {tex} \mathrm { Na } _ { 2 } \mathrm { O } _ { 2 } {/tex}

Electrolysis of {tex} 50 \% {/tex} on {tex} \mathrm { Na } _ { 2 } \mathrm { O } _ { 2 } {/tex}

D

Burning hydrogen in excess oxygen

Q 9.

Correct4

Incorrect-1

Consider the following reactions
I: {tex} \mathrm { AlH } _ { 3 } + \mathrm { H } ^ { - } \rightarrow \mathrm { AlH } _ { 4 } ^ { - } {/tex}
II: {tex} \mathrm { H } _ { 2 } \mathrm { O } + \mathrm { H } ^ { - } \rightarrow \mathrm { H } _ { 2 } + \mathrm { OH } ^ { - } {/tex}
Select the correct statements based on these reactions

A

{tex} \mathrm { H } ^ { - } {/tex} is a Lewis acid in I and Lewis base in II

{tex} \mathrm { H } ^ { - } {/tex} is a Lewis base in I and Bronsted base in II

C

{tex} \mathrm { H } ^ { - } {/tex} is a Lewis acid in I and Bronsted acid in II

D

{tex} \mathrm { H } ^ { - } {/tex} is a Lewis base in I and II

Q 10.

Correct4

Incorrect-1

{tex} \mathrm { H } _ { 2 } {/tex} reacts much faster with {tex} \mathrm { Cl } _ { 2 } {/tex} than {tex} \mathrm { D } _ { 2 } {/tex}, because

A

Rate of diffusion of {tex} \mathrm { H } _ { 2 } {/tex} is greater than {tex} \mathrm { D } _ { 2 } {/tex}

{tex} \mathrm { H } _ { 2 } {/tex} has lower energy of activation than {tex} \mathrm { D } _ { 2 } {/tex}

C

Both (a) and (b) are correct

D

None of the statements is correct

Q 11.

Correct4

Incorrect-1

Which among the following is a hydride?

A

Rongalite

B

Nitrolim

Hydrolith

D

Minium

Q 12.

Correct4

Incorrect-1

{tex} \mathrm { H } _ { 2 } , \mathrm { D } _ { 2 } {/tex} and {tex} \mathrm { T } _ { 2 } {/tex} do not differ in

A

Freezing point

B

Boiling point

C

Critical temperature

Bond energy