NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1433 - 1440 of 1484

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Question number: 1433

» Chemistry » Acids, Bases and Salts

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Question

Which of the following gas is passed through dry slaked lime to produce bleaching powder?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1434

» Chemistry » Carbon and Its Compounds

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Question

Ethanoic acid is used in making of?

Choices

Choice (4)Response

a.

Soaps

b.

Oils

c.

Ethane

d.

Artificial fibre

Question number: 1435

» Chemistry » Carbon and Its Compounds

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Question

Which of the following unsaturated hydrocarbon has cyclic structure?

Choices

Choice (4)Response

a.

Ethene

b.

Pentane

c.

Benzene

d.

Butene

Question number: 1436

» Chemistry » Carbon and Its Compounds

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MCQ▾

Question

Find the A in Reaction

Find the a in Reaction

The above reaction is example of catalytic decomposition of carboxylic acids, then what is A?

Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

Question number: 1437

» Chemistry » Acids, Bases and Salts

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Question

Which of the following compound is define “Amphoterism”?

Choices

Choice (4)Response

a.

b.

c.

d.

All a. , b. and c. are correct

Question number: 1438

» Chemistry » Carbon and Its Compounds

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Question

Which of the following compound has IUPAC name “Formaldehyde”?

Choices

Choice (4)Response

a.

b.

c.

HCHO

d.

Question number: 1439

» Chemistry » Metals and Non-Metals

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Question

Which of the following is used calico printing, print industry and to joining the pieeces of china clay?

Choices

Choice (4)Response

a.

Water glass

b.

Calcium Chloride

c.

Silicones

d.

Carborandum

Question number: 1440

» Chemistry » Metals and Non-Metals

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Question

Which of the following metallurgical operation is correct at high temperature?

Choices

Choice (4)Response

a.

Electrometallurgy

b.

Pyrometallurgy

c.

Hydrometallurgy

d.

All of the above

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