Chemistry-Physical and Chemical Changes (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 12 - 17 of 26

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Question number: 12

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Two copper plates in a glass vessel

Two Copper Plates in a Glass Vessel

Two copper plates placed in a glass vessel with H2SO4

If two copper plates are moved further apart from each other, then

Choices

Choice (4) Response

a.

less copper deposited

b.

same copper deposited

c.

more copper deposited

d.

two times copper deposited

Question number: 13

» 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: 14

» 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: 15

» 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: 16

» 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: 17

» 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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