Chemistry (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 29 - 35 of 63

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Question number: 29

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Which of the following forms a colloidal solution?

Choices

Choice (4) Response

a.

Common salt

b.

Copper sulphate

c.

Ammonium chloride

d.

Starch

Question number: 30

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Which of the following is expected to show electrophoresis?

Choices

Choice (4) Response

a.

A solution of sodium carbonate

b.

Gold sol

c.

A solution of common salt

d.

Solution of sugar in water

Question number: 31

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Which one of the following is an optical property of a colloid?

Choices

Choice (4) Response

a.

Electrophoresis

b.

Tyndall effect

c.

Brownian movement

d.

Coagulation

Question number: 32

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

A mixture of ammonium chloride and sodium chloride can be separated by

Choices

Choice (4) Response

a.

Distillation

b.

Decantation

c.

Sublimation

d.

Filtration

Question number: 33

» Chemistry » Acid Bases and Salt

MCQ▾

Question

Which of the following are used as an anti-acid to reduce acidity in stomach?

Choices

Choice (4) Response

a.

Sodium carbonate and magnesium hydroxide

b.

Magnesium hydroxide and sodium hydroxide

c.

Sodium bicarbonate and calcium hydroxide

d.

Sodium bicarbonate and magnesium hydroxide

Question number: 34

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

Which of the following air pollutants reduces the oxygen-carrying capacity of blood?

Choices

Choice (4) Response

a.

Carbon monoxide

b.

Carbon dioxide

c.

Sulphur dioxide

d.

Nitrous oxide

Question number: 35

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

On washing with soap, a turmeric stain on the cloth turns to red because

I. soap solution is alkaline

II. soap solution is acidic

III. turmeric contains a natural indicator

IV. turmeric contains litmus

Select the correct alternative.

Choices

Choice (4) Response

a.

I and III

b.

II and IV

c.

III and II

d.

I and IV

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