Hydrogen-Physical and Chemical Properties of Water (NEET Chemistry): Questions 7 - 14 of 14

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Question number: 7

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

The temporary hardness of water due to calcium bicarbonate can be removed by adding?

Choices

Choice (4) Response

a.

Calcium carbonate

b.

Calcium chloride

c.

Calcium hydroxide

d.

Hydrochloric acid

Question number: 8

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

Heavy water is used in atomic reactor as?

Choices

Choice (4) Response

a.

Neither coolant nor moderator

b.

Coolant

c.

Moderator

d.

Moderator and coolant

Question number: 9

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

Calgon is an industrial name given to?

Choices

Choice (4) Response

a.

Sodium meta- aluminate

b.

Hydrated sodium aluminium silicate

c.

Sodium phosphate

d.

Sodium hexameta phosphate

Question number: 10

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

What is the degree of hardness f sample of water containing 24 mg of MgSO4 (molecular mass 120) per kg of water?

Choices

Choice (4) Response

a.

20 ppm

b.

10 ppm

c.

25 ppm

d.

15 ppm

Question number: 11

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

Which of the following is the freezing point of heavy water?

Choices

Choice (4) Response

a.

-3.80C

b.

O0C

c.

3.80C

d.

380C

Question number: 12

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

The exhausted permutit is generally regenerated by percolating through it a solution of?

Choices

Choice (4) Response

a.

Magnesium chloride

b.

Sodium chloride

c.

Calcium chloride

d.

Barium chloride

Question number: 13

» Hydrogen » Physical and Chemical Properties of Water

MCQ▾

Question

What is the tolerable amount of hardness of water in ppm in domestic usage?

Choices

Choice (4) Response

a.

100 - 200 ppm

b.

150 - 200 ppm

c.

100 ppm

d.

100 - 150 ppm

Question number: 14

» 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

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