NCERT Based General Studies (GS): Questions 3382 - 3387 of 3665

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Question number: 3382

» Science » Class-9 NCERT » Matter in Our Surroundings (States of Matter)

MCQ▾

Question

Why we can smell the aroma of hot basmati rice from several meters away?

Choices

Choice (4) Response

a.

Because gases diffuse easily

b.

Change of volume of a gas due to change of temperature is high

c.

Gases have no rigidity and can flow easily

d.

None of the above

Question number: 3383

» Science » Class-9 NCERT » Matter in Our Surroundings (Can Matter Change Its State?)

MCQ▾

Question

Why solid carbon dioxide is stored under high pressure?

Choices

Choice (4) Response

a.

Because at low temperature it is converted into the gas

b.

Because at low pressure it is converted into liquid

c.

At low pressure it gets destroyed

d.

All of the above

Question number: 3384

» Science » Class-9 NCERT » Matter in Our Surroundings (Evaporation)

MCQ▾

Question

Factors which are affecting the process of evaporation are:

Choices

Choice (4) Response

a.

Temperature

AND

Effect of humidity

b.

Wind Speed

c.

Surface Area

d.

All a. , b. and c. are correct

Question number: 3385

» Science » Class-9 NCERT » Matter in Our Surroundings (Can Matter Change Its State?)

MCQ▾

Question

A process in which a liquid is formed from its vapour usually by cooling is called as:

Choices

Choice (4) Response

a.

Boiling

b.

Freezing

c.

Condensation

d.

Melting

Question number: 3386

» Science » Class-9 NCERT » Matter in Our Surroundings (Can Matter Change Its State?)

MCQ▾

Question

Melting is:

Choices

Choice (4) Response

a.

Changing solid to gaseous state

b.

Changing solid to liquid state

c.

Changing liquid to gaseous state

d.

Question does not provide sufficient data or is vague

Question number: 3387

» Science » Class-9 NCERT » Is Matter Around Us Pure? (Separating the Components of a Mixture)

MCQ▾

Question

Evaporation is used for the:

Choices

Choice (4) Response

a.

Separation of common salt from sea water

b.

Separation of volatile component from its non-volatile solute

c.

Both a. and b. are correct

d.

None of the above

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