NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1911 - 1917 of 2028

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Question number: 1911

» Chemistry » Coal and Petroleum

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MCQ▾

Question

Which fraction of petroleum has highest boiling point?

Choices

Choice (4) Response

a.

Diesel oil

b.

Kerosene

c.

Ether

d.

Gasoline

Question number: 1912

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

Oxides or hydroxides and ________ will be found when metal react with water?

Choices

Choice (4) Response

a.

Oxygen

b.

Hydrogen

c.

Carbon dioxide

d.

None of the above

Question number: 1913

» Chemistry » Combustion and Flame

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MCQ▾

Question

Combustions are ________

Choices

Choice (4) Response

a.

Explosive

b.

Spontaneous, rapid, explosive

c.

Spontaneous only

d.

Question does not provide sufficient data or is vague

Question number: 1914

» Chemistry » Coal and Petroleum

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MCQ▾

Question

Which of the following is involved in the process of an anaerobic fermentation?

Choices

Choice (4) Response

a.

Petroleum

b.

Coal gas

c.

Water gas

d.

Biogas

Question number: 1915

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

Which of the following metal has the capability of gaining electron as well as losing an electron?

Choices

Choice (4) Response

a.

b.

Calcium Ca

c.

Mercury Hg

d.

Question number: 1916

» Chemistry » Combustion and Flame

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MCQ▾

Question

Select the non-combustible substance from the following substances?

Choices

Choice (4) Response

a.

Coal

b.

Coke

c.

Wood

d.

Diamond

Question number: 1917

» Chemistry » Coal and Petroleum

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MCQ▾

Question

The fire goes off when sand is poured over some other burning material, it is because of?

Choices

Choice (4) Response

a.

The air supply is cut-off

b.

Sand is bad conductor of heat

c.

The temperature is brought down by sand

d.

Question does not provide sufficient data or is vague

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