Chemistry [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 8 - 14 of 208

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Question number: 8

Chemistry
Edit

Question

MCQ▾

Which one of the following will not show diffusion property?

Choices

Choice (4)Response

a.

Oxygen, water

b.

Hydrogen, Oxygen

c.

Sugar, water

d.

Salt, sugar

Question number: 9

Chemistry
Edit

Question

MCQ▾

Upon cooling a liquid, potential energy is released in form of ________.

Choices

Choice (4)Response

a.

Light

b.

Heat energy

c.

Kinetic energy

d.

Question does not provide sufficient data or is vague

Question number: 10

Chemistry
Edit

Question

MCQ▾

The temperature corresponds to 573 K is ________

Choices

Choice (4)Response

a.

312 ˚C

b.

56 K

c.

300 ˚C

d.

None of the above

Question number: 11

Chemistry
Edit

Question

MCQ▾

We can see the zig zag movement of dust particles in sun light. This motion is called:

Choices

Choice (4)Response

a.

Circular motion

b.

Brownian motion

c.

Linear motion

d.

Curved motion

Question number: 12

Chemistry
Edit

Question

MCQ▾

Who discovered Law of conservation of mass?

Choices

Choice (4)Response

a.

Dalton

b.

Proust

c.

Richter

d.

Lavoisier

Question number: 13

Chemistry
Edit

Question

MCQ▾

Which state has fastest rate of diffusion?

Choices

Choice (4)Response

a.

Semisolid

b.

Solid

c.

Gas

d.

Liquid

Question number: 14

Chemistry
Edit

Question

MCQ▾

The law of conservation of mass is not valid unless ________

Choices

Choice (4)Response

a.

Mass is considered

b.

Mass and energy are considered together

c.

Energy is considered

d.

Light energy is considered