NCERT Class 9 Science-Matter in Our Surroundings[States of Matter] [NCERT Based General Studies (GS)]: Questions 1 - 5 of 12

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Question 1

Question MCQ▾

Any substance can exist in liquid state which has:

Choices

Choice (4)Response

a.

More intermolecular space than solids

b.

Strong intermolecular force between constituent particles

c.

Kinetic energy is sufficient enough for particles to move to and fro

d.

Both b. and c. are correct

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Question 2

Question MCQ▾

Any substances exist in gaseous form if:

Choices

Choice (4)Response

a.

It has negligible intermolecular forces

b.

It has large kinetic energy

c.

Both a. and b. are correct

d.

None of the above

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Question 3

Question MCQ▾

Why cold drinks, spray cans, perfume bottles and deodorants are kept away from direct heat or sunlight?

Choices

Choice (4)Response

a.

Change in volume of gas due to change of temperature is very high

b.

Gases can be liquefied on cooling

c.

Because gases diffuse easily

d.

Question does not provide sufficient data or is vague

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Question 4

Question MCQ▾

Liquids diffuse more easily than solids:

Choices

Choice (4)Response

a.

Less intermolecular forces

b.

Liquids have only one free surface

c.

Because liquids have more kinetic energy

d.

Question does not provide sufficient data or is vague

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Question 5

Question MCQ▾

Solids have high density because:

Choices

Choice (4)Response

a.

Particles in solids are packed tightly

b.

Intermolecular space in solids is negligible and small

c.

They have strong intermolecular forces

d.

Question does not provide sufficient data or is vague

Edit