NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1857 - 1864 of 2028

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Question number: 1857

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

Silicon

b.

Phosphorous

c.

Graphite

d.

Sulphur

Question number: 1858

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

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 number: 1859

» Chemistry » Coal and Petroleum

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MCQ▾

Question

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 number: 1860

» Chemistry » Coal and Petroleum

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MCQ▾

Question

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 number: 1861

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

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 number: 1862

» Chemistry » Coal and Petroleum

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MCQ▾

Question

In nature renewable source of energy are produced________?

Choices

Choice (4) Response

a.

Quarterly

b.

Annually

c.

Continuously

d.

Biennial

Question number: 1863

» Chemistry » Combustion and Flame

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MCQ▾

Question

Which type of reaction is combustion?

Choices

Choice (4) Response

a.

Redox reaction

b.

Substitution

c.

Oxidation

d.

Reduction

Question number: 1864

» Chemistry » Coal and Petroleum

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MCQ▾

Question

Select the true statement from the following regarding petroleum?

Choices

Choice (4) Response

a.

Heavies than water and insoluble in it

b.

Lighter than water & insoluble in water

c.

Heavies than water and soluble in it

d.

Lighter than water and soluble in it.

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