Given below are two reactions, involved in the commercial production of dihydrogen (H $_{2}$ ). The two reactions are carried out at temperature "T $_{1}$ " and "T $_{2}$ ", respectively

$C (s) + H_{2} O (g) \overset{T_{1}}{⟶} C O (g) + H_{2} (g)$

$C O (g) + H_{2} O (g) ⟶_{C a t a l y s t}^{T_{2}} C O_{2} (g) + H_{2} (g)$

The temperatures T $_{1}$ and T $_{2}$ are correctly related as :

_{1}

< T

_{2}

_{1}

= T

_{2}

_{1}

= 100 K, T

_{2}

= 1270 K

_{1}

> T

_{2}

Question 8.

Which of the following can reduce decomposition of $H_{2} O_{2}$ on exposure to light :

Urea

Glass containers

Alkali

Dust

Question 9.

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Loss of electron from hydrogen atom results in nucleus of $\sim 1.5 \times 10^{- 3} pm$ size.

Reason R : Proton $(H^{+})$ always exists in combined form.

In the light of the above statements, choose the most appropriate answer from the options given below:

Both

A

and

R

are correct and

R

is the correct explanation of

A

A is correct but R is not correct

A is not correct but R is correct

Both

A

and

R

are correct but

R

is NOT the correct explanation of

A

Question 10.

The starting material for convenient preparation of deuterated hydrogen peroxide ( $D_{2} O_{2}$ ) in :

{BaO}_{2}

2-ethylanthraquinol

BaO

K_{2} S_{2} O_{8}

Question 1.

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Hydrogen is an environment friendly fuel.

Reason R : Atomic number of hydrogen is 1 and it is a very light element.

In the light of the above statements, choose the correct answer from the options given below :

Both A and R are true but R is NOT the correct explanation of A

A is false but R is true

A is true but R is false

Both A and R are true and R is the correct explanation of A

Question 2.

The normal rain water is slightly acidic and its

pH

value is

5.6

because of which one of the following?

N_{2} O_{5} + H_{2} O \to 2 {HNO}_{3}

2 {SO}_{2} + O_{2} + 2 H_{2} O \to 2 H_{2} {SO}_{4}

4 {NO}_{2} + O_{2} + 2 H_{2} O \to 4 {HNO}_{3}

{CO}_{2} + H_{2} O \to H_{2} {CO}_{3}

Question 3.

Given below are two statements :

Statement I : $H_{2} O_{2}$ is used in the synthesis of Cephalosporin

Statement II : $H_{2} O_{2}$ is used for the restoration of aerobic conditions to sewage wastes.

In the light of the above statements, choose the most appropriate answer from the options given below :

Statement

I

is incorrect but Statement

II

is correct

Statement

I

is correct but Statement

II

is incorrect

Both Statement

I

and Statement

II

are incorrect

Both Statement

I

and Statement

II

are correct

Question 4.

$H_{2} O_{2}$ acts as a reducing agent in :

{Mn}^{2 +} + 2 H_{2} O_{2} \to {MnO}_{2} + 2 H_{2} O

2 {Fe}^{2 +} + 2 H^{+} + H_{2} O_{2} \to 2 {Fe}^{3 +} + 2 H_{2} O

{Na}_{2} S + 4 H_{2} O_{2} \to {Na}_{2} {SO}_{4} + 4 H_{2} O

2 NaOCl + H_{2} O_{2} \to 2 NaCl + H_{2} O + O_{2}

Question 5.

Which of the given compounds can enhance the efficiency of hydrogen storage tank?

SiH

_{4}

Li/P

_{4}

NaNi

_{5}

Di-isobutylaluminium hydride

Question 6.

Match List I with List II

	List I		List II
A.	Cobalt catalyst	I.	$(H_{2} + {Cl}_{2})$ production
B.	Syngas	II.	Water gas production
C.	Nickel catalyst	III.	Coal gasification
D.	Brine solution	IV.	Methanol production

Choose the correct answer from the options given below :

A-IV, B-III, C-I, D-II

A-IV, B-III, C-II, D-I

A-II, B-III, C-IV, D-I

A-IV, B-I, C-II, D-III

Question 7.

In which of the following reactions the hydrogen peroxide acts as a reducing agent?

M n^{2 +} + H_{2} O_{2} \to M n^{4 +} + 2 O H^{-}

HOCl + H_{2} O_{2} \to H_{3} O^{+} + C l^{-} + O_{2}

PbS + 4 H_{2} O_{2} \to PbS O_{4} + 4 H_{2} O

2 F e^{2 +} + H_{2} O_{2} \to 2 F e^{3 +} + 2 O H^{-}

Question 8.

The products obtained during treatment of hard water using Clark's method are :

{CaCO}_{3}

and

{MgCO}_{3}

Ca (OH)_{2}

and

Mg (OH)_{2}

{CaCO}_{3}

and

Mg (OH)_{2}

Ca (OH)_{2}

and

{MgCO}_{3}

Question 9.

The metal salts formed during softening of hardwater using Clark's method are :

Ca (OH)_{2}

and

Mg (OH)_{2}

{CaCO}_{3}

and

Mg (OH)_{2}

Ca (OH)_{2}

and

{MgCO}_{3}

{CaCO}_{3}

and

{MgCO}_{3}

Question 10.

Given below are two statements.

Statement I : Hydrogen peroxide can act as an oxidizing agent in both acidic and basic conditions.

Statement II : Density of hydrogen peroxide at $298 K$ is lower than that of $D_{2} O$ .

In the light of the above statements, choose the correct answer from the options given below.

Both Statement I and Statement II are true.

Both Statement I and Statement II are false.

Statement I is true but Statement II is false.

Statement I is false but Statement II is true.

JEE Main Hydrogen Practice Questions With Solutions

JEE Main Chemistry Hydrogen Practice Questions

Question 1.

Question 2.

Question 3.

Question 4.

Question 5.

Question 6.

Question 7.

Question 8.

Question 9.

Question 10.

Question 1.

Question 2.

Question 3.

Question 4.

Question 5.

Question 6.

Question 7.

Question 8.

Question 9.

Question 10.

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