NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1441 - 1448 of 1484

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Question number: 1441

» Chemistry » Metals and Non-Metals

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Question

Which of the below method is used to obtain pure metal or method used for purification of metal?

Choices

Choice (4)Response

a.

Electrolytic refining

b.

Gravity separation

c.

Froth Floatation

d.

Magnetic separation

Question number: 1442

» Chemistry » Metals and Non-Metals

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Question

…………. . element liberate when react with diluted nitric acid?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1443

» Chemistry » Carbon and Its Compounds

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Question

…… has cleaning properties on clothes in water while using detergent?

Choices

Choice (4)Response

a.

Benzene sulphuric acid

b.

Benzene sulphide

c.

Benzene sulphate

d.

Benzene sulphonate

Question number: 1444

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

What is the purpose of polling process?

Choices

Choice (4)Response

a.

Removal of from

b.

Removal of from

c.

Removal of from

d.

For the removal of from

Question number: 1445

» Chemistry » Metals and Non-Metals

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Question

is known as………. ?

Choices

Choice (4)Response

a.

Bauxite

b.

Cryolite

c.

Feldspar

d.

China clay

Question number: 1446

» Chemistry » Carbon and Its Compounds

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MCQ▾

Question

Which of the following is the formula of benzene?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1447

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

Which of the following one is ore of Zinc?

Choices

Choice (4)Response

a.

Haematite

b.

Dolomite

c.

Calamine

d.

Cryolite

Question number: 1448

» Chemistry » Carbon and Its Compounds

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MCQ▾

Question

In homologous series. All the members have the same ……………formula?

Choices

Choice (4)Response

a.

General formula

b.

Physical properties

c.

Molecular formula

d.

Empirical formula

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