Hydrogen (NEET Chemistry): Questions 48 - 50 of 50

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Question number: 48

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

The hardness of water sample containing 0.002 mole of magnesium sulphate dissolved in a litre is expressed as?

Choices

Choice (4) Response

a.

2000ppm

b.

20 ppm

c.

120 ppm

d.

200 ppm

Question number: 49

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

MCQ▾

Question

What is the volume of oxygen liberated at NTP by complete decomposition of 100 ml of 2M solution of hydrogen peroxide?

Choices

Choice (4) Response

a.

2.24 L

b.

22.4 L

c.

224 L

d.

0.224 L

Question number: 50

» Hydrogen » Physical and Chemical Properties of Heavy Water

MCQ▾

Question

A solution of heavy water containing sodium carbonate when electrolyzed, which of the following gas evolve at cathode?

Choices

Choice (4) Response

a.

H2

b.

O2

c.

D2

d.

CO2

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