Hydrogen (NEET (National Eligibility cum Medical Entrance Test) Chemistry): Questions 15 - 21 of 50

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Question number: 15

» Hydrogen » Preparation, Properties and Uses of Hydrogen

MCQ▾

Question

In Bosch’s process which of the following gas is used for the production of hydrogen?

Choices

Choice (4) Response

a.

Water gas

b.

Natural gas

c.

Coal gas

d.

Producer gas

Question number: 16

» Hydrogen » Preparation, Properties and Uses of Hydrogen

MCQ▾

Question

Ortho and Para hydrogen differ in?

Choices

Choice (4) Response

a.

in the number of protons

b.

in the nature of spins of protons

c.

in the molecular mass

d.

in the nature of spins of electrons

Question number: 17

» Hydrogen » Structure, Preparation, Reactions and Uses of Hydrogen Peroxide

MCQ▾

Question

Statues coated with white lead on long exposure to atmosphere turn black due to the formation of?

Choices

Choice (4) Response

a.

Lead oxide

b.

Lead sulphate

c.

Lead sulphide

d.

All of the above

Question number: 18

» Hydrogen » Structure, Preparation, Reactions and Uses of Hydrogen Peroxide

MCQ▾

Question

Excess of KI and dil H2SO4 were mixed in 50 ml H2O2. The liberated I2 requires 20 ml of Na2S2O3. Find out the strength of H2O2 in g/litre?

Choices

Choice (4) Response

a.

6.8g

b.

0.068 g

c.

68 g

d.

0.68 g

Question number: 19

» Hydrogen » Preparation, Properties and Uses of Hydrogen

MCQ▾

Question

When sodium hydride in fused state is electrolyzed, hydrogen will be evolved at?

Choices

Choice (4) Response

a.

Electrolyte

b.

Cathode

c.

Anode

d.

None of the above

Question number: 20

» Hydrogen » Structure, Preparation, Reactions and Uses of Hydrogen Peroxide

MCQ▾

Question

20 ml of a sample of H2O2 gives 400 ml of oxygen measured at NTP. The sample should be labeled as:

Choices

Choice (4) Response

a.

Dil. H2O2

b.

20 vol. H2O2

c.

Anhydrous H2O2

d.

5 vol. H2O2

Question number: 21

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

Hard water is not suitable for washing clothes because?

Choices

Choice (4) Response

a.

It is acidic in nature

b.

It contains Na2SO4 and KCl

c.

It contains impurities

d.

It gives insoluble precipitates

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