Chemistry [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 42 - 49 of 208

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Question number: 42

» Chemistry » The Nature of Matter

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MCQ▾

Question

The element which is a liquid at slightly above 30˚C is:

Choices

Choice (4)Response

a.

Calcium

b.

Lithium

c.

Sodium

d.

Cesium

Question number: 43

» Chemistry » The Nature of Matter

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MCQ▾

Question

Tyndall effect is shown by ________.

Choices

Choice (4)Response

a.

Precipitate

b.

Solution

c.

Plasma

d.

Sol

Question number: 44

» Chemistry » The Nature of Matter

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MCQ▾

Question

The atomicity of sulphur in S8 is ________

Choices

Choice (4)Response

a.

8

b.

1

c.

4

d.

0

Question number: 45

» Chemistry » The Nature of Matter

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MCQ▾

Question

Milk is ________ type of colloidal solution.

Choices

Choice (4)Response

a.

Emulsion

b.

Suspension

c.

Sol

d.

Foam

Question number: 46

» Chemistry » The Nature of Matter

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MCQ▾

Question

Air is ________

Choices

Choice (4)Response

a.

An element

b.

A compound

c.

A mixture

d.

None of the above

Question number: 47

» Chemistry » The Nature of Matter

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MCQ▾

Question

Detergent action of soap and synthetic detergents is due to their ________.

Choices

Choice (4)Response

a.

Emulsification properties

b.

Interfacial area

c.

High molecular weight

d.

Ionization

Question number: 48

» Chemistry » The Nature of Matter

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MCQ▾

Question

Which of the following can pass through filter paper but not through a semi permeable membrane?

Choices

Choice (4)Response

a.

Suspension

b.

True solution

c.

Colloidal solution

d.

Question does not provide sufficient data or is vague

Question number: 49

» Chemistry » The Nature of Matter

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MCQ▾

Question

Which of the following form a colloidal solution in water?

Choices

Choice (4)Response

a.

Starch

b.

Barium Nitrate

c.

NaCl

d.

Glucose

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