NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1445 - 1452 of 1484

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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

Question number: 1449

» Chemistry » Carbon and Its Compounds

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MCQ▾

Question

Generally ethanol is used in?

Choices

Choice (4) Response

a.

Tincture iodine

b.

Alcoholic drink

c.

Cough syrup

d.

Question does not provide sufficient data or is vague

Question number: 1450

» Chemistry » Carbon and Its Compounds

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Question

Ester can be prepared from the acid and the alcohol. What are the chemical formulas of then two compounds?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1451

» Chemistry » Carbon and Its Compounds

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MCQ▾

Question

What is the ratio of hydrogen atoms in propane and propyne?

Choices

Choice (4) Response

a.

1: 2

b.

2: 3

c.

2: 1

d.

3: 2

Question number: 1452

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

Which of the following metal is added to 22 carat gold to make ornaments?

Choices

Choice (4) Response

a.

Platinum

b.

Copper

c.

Aluminium

d.

Iron

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