Chemistry [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 39 - 45 of 209

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Question 39

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Question

MCQ▾

When 1 gram of fuel is completely burned, the heat produced is termed as?

Choices

Choice (4)Response

a.

Heat capacity

b.

Vapour density

c.

Boiling point

d.

Calorific value

Question 40

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Question

MCQ▾

Select the non-metal which is a good conductor of electricity?

Choices

Choice (4)Response

a.

Silicon

b.

Phosphorous

c.

Graphite

d.

Sulphur

Question 41

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Question

MCQ▾

Which of the following ionic species are formed by metals?

Choices

Choice (4)Response

a.

Anions

b.

Cations & Anions

c.

Cations

d.

Do not form ions

Question 42

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Question

MCQ▾

The gas in LPG cylinder (cooking gas) is liquefied by?

Choices

Choice (4)Response

a.

Increasing volume

b.

Replacing pressure

c.

Applying pressure

d.

Increasing temperature

Question 43

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Question

MCQ▾

Which of the following chemical is present in matchstick when it combust?

Choices

Choice (4)Response

a.

Starch and wool

b.

Potassium chlorate

c.

Antimony sulphide

d.

Phosphorous

Question 44

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Question

MCQ▾

Which of the following leads to the stability of metals?

Choices

Choice (4)Response

a.

Loss or gain of electrons

b.

Loss of electrons

c.

Gain of electrons

d.

None of the above

Question 45

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Question

MCQ▾

In nature renewable source of energy are produced________?

Choices

Choice (4)Response

a.

Quarterly

b.

Annually

c.

Continuously

d.

Biennial