JEE Main Hydrogen Practice Questions With Solutions

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JEE Main Hydrogen Practice Questions with Solutions

The JEE Main Hydrogen Practice Test is a very helpful resource that consists of a variety of questions from the Hydrogen chapter of the Chemistry section. This chapter deals with the first element of the periodic table, i.e., hydrogen, its properties, reactions, and more. Hydrogen is an interesting chapter from the organic chemistry section. The JEE Main Hydrogen Practice Questions with Solutions contain a variety of questions on this topic, as well as their detailed solutions for the reference of students. These practice tests usually consist of 15 to 20 questions on hydrogen, and students can attempt at least one practice test every week to enhance their knowledge of hydrogen. Through these practice tests, they will be able to master this chapter well. Practising this part will improve the student’s organic chemistry part, and they’ll be able to obtain good scores in the JEE Main entrance exam.

Multiple-choice questions and numerical value questions are the format of questions to be asked from the hydrogen chapter. Students preparing for the JEE Main exam can expect around 1 or 2 questions from this chapter in the JEE Main exam’s question paper. The important topics covered under this chapter are Preparation & Properties of Hydrogen, Isotopes of Hydrogen, Hydrogen Peroxide, Hydrides, Hydrogen as a Fuel, Important Reactions of Hydrogen, Water and Heavy Water, Water Treatment & Hardness. Students should study these topics well and practice questions from them more. The JEE Main Hydrogen Practice Questions with Solutions have a lot of questions from all these important topics above for students to study and build a strong grasp of the overall chapter. Regularly practising these tests will help JEE Main aspirants in strengthening their basic concepts, and in being able to answer accurately in the exam. It will also allow them to improve their knowledge of organic chemistry and ace the chemistry section of the JEE Main entrance exam easily.

JEE Main Chemistry Hydrogen Practice Questions

Mathematics Physics

Question 1.

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

Assertion A : Isotopes of hydrogen have almost same chemical properties, but difference in their rates of reaction.

Reason R : Isotopes of hydrogen have different enthalpy of bond dissociation.

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

A is not correct but R is correct

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

A is correct but R is not correct

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

Question 2.

Given below are two statements :

Statement I : Permutit process is more efficient compared to the synthetic resin method for the softening of water.

Statement II : Synthetic resin method results in the formation of soluble sodium salts.

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

Statement I is correct but Statement II is incorrect

Both the Statements I and II are correct

Both the Statements I and II are incorrect

Statement I is incorrect but Statement II is correct

Question 3.

Match List I with List II

	LIST I Type of Hydride		LIST II Example
A.	Electron deficient hydride	I.	${MgH}_{2}$
B.	Electron rich hydride	II.	$HF$
C.	Electron precise hydride	III.	$B_{2} H_{6}$
D.	Saline hydride	IV.	${CH}_{4}$

Choose the correct answer from the options given below:

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

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

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

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

Question 4.

Which hydride among the following is less stable?

_{3}

LiH

BeH

_{2}

Question 5.

Given below are two statements:

Statement-I : Methane and steam passed over a heated $Ni$ catalyst produces hydrogen gas.

Statement-II : Sodium nitrite reacts with ${NH}_{4} Cl$ to give $H_{2} O, N_{2}$ and $NaCl$ .

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

Statement I is correct but Statement II is incorrect

Both the statements I and II are incorrect

Both the statements I and II are correct

Statement I is incorrect but Statement II is correct

Question 6.

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

Assertion A : Physical properties of isotopes of hydrogen are different.

Reason R : Mass difference between isotopes of hydrogen is very large.

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

A

is true but

R

is false

Both

A

and

R

are true but

R

is NOT the correct explanation of

A

A

is false but

R

is true

Both

A

and

R

are true and

R

is the correct explanation of

A

Question 7.

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 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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