MCQ on Class 11 Chemistry Chapter 9 Hydrogen

Questions

1 Hydrogen is most __________ element in the universe.

A Abundant

B None

C Both

D Consumer

View Answer

Answer:Abundant

2 The volume of 10 volume H₂O₂ required to liberate 500 ml of O₂ at S.T.P. is :

A 25 ml

B 50 ml

C 100 ml

D 125 ml

View Answer

Answer:50 ml

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3 Hydrogen is a good __________ agent.

A Oxidizing

B Reducing

C Acidic

D Basic

View Answer

Answer:Reducing

4 Atomic hydrogen is called

A Protium

B Deutrium

C Nascent Hydrogen

D Tritium

View Answer

Answer:Nascent Hydrogen

5 Hydrogen is the most abundant element on earth after______.

A Oxygen

B Carbon

C Sulphur

D None of the Above

View Answer

Answer:Oxygen

6 What is gram equivalent weight of hydrogen peroxide as reductant?

A 100

B 125

C 152

D None of the Above

View Answer

Answer:152

7 _________________ on water decolourises H₂O₂

A O₃

B Acidic KMnO₄ solution

C Black Suspension of Lead Sulphide(PbS)

D None of these.

View Answer

Answer:Black Suspension of Lead Sulphide(PbS)

8 Pure H₂O₂ is:

A Semi – solid

B Liquid

C Solid

D Gas

View Answer

Answer:Liquid

9 The freezing point of heavy water is

A 0°C

B 3.8°C

C 4°C

D 1°C

View Answer

Answer:3.8°C

10 Hydrogen has isotopes

A 2

B 3

C 4

D 5

View Answer

Answer:4

11 Water gas is mixture of hydrogen H₂ and

A CO

B CO₂

C Cl₂

D SO₂

View Answer

Answer:CO

12 The volume strength of 1.5 NH₂O₂ solution is :

A 4.8

B 5.2

C 8.8

D 8.4

View Answer

Answer:8.4

13 Atomic hydrogen is called

A Protium

B Deutrium

C Nascent Hydrogen

D Tritium

View Answer

Answer:Nascent Hydrogen

14 Which of the following statements regarding hydrogen peroxide is/ are incorrect?

A As aerating agent in production of sponge rubber

B As an antichlor

C For restoring white colour of blackened lead painting

D All of the above

View Answer

Answer:All of the above

15 Water shows anomalous behavior between

A 0 to 4°C

B 0 to 5°C

C 0 to -4°C

D 4 to 0°C

View Answer

Answer:0 to 4°C

16 What is the product of the reaction of H₂O₂ with Cl₂?

A O₂ + HOCl

B HCl + O₂

C H₂O + HCl

D HCl + H₂

View Answer

Answer:HCl + O₂

17 Which of the following hydrides are generally nonstochiometric in nature?

A Ionic Hydrides

B Molecular Hydrides

C Interstitial Hydrides

D All of the Above.

View Answer

Answer:Interstitial Hydrides

18 H₂O₂ used in rocket has the concentration:

A 50%

B 90%

C 70%

D 30%

View Answer

Answer:90%

19 The freezing point of heavy water is

A 0°C

B 3.8°C

C 4°C

D 1°C

View Answer

Answer:3.8°C

20 Pure H₂O₂ is :

A Semi – solid

B Liquid

C Solid

D Gas

View Answer

Answer:Liquid

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