NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1473 - 1480 of 1484

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Question number: 1473

» Chemistry » Metals and Non-Metals

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Question

The ores which are subjected to froth floatation are?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1474

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

Bran is an alloy of ………. .

Choices

Choice (4)Response

a.

b.

and

c.

and

d.

and

Question number: 1475

» Chemistry » Carbon and Its Compounds

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MCQ▾

Question

The IUPAC name of given compound is

Find the IUPAC name

Find the IUPAC Name

Choices

Choice (4)Response

a.

3 - methyl butan – 2 – ol

b.

2 – methyl butan – 3 – ol

c.

Butanol

d.

Pentanol

Question number: 1476

» Chemistry » Metals and Non-Metals

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Question

Which of the following is formed when nitric acid oxidizes sulphur?

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1477

» Chemistry » Metals and Non-Metals

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MCQ▾

Question

Which of the following types of ores are subjected to roasting?

Choices

Choice (4)Response

a.

Carbonate ores

b.

Oxide ores

c.

Sulphide ores

d.

Silicate ores

Question number: 1478

» Chemistry » Metals and Non-Metals

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Question

…………. Gas is liberated when copper is treated with concentrated

Choices

Choice (4)Response

a.

Hydrogen Sulphide

b.

Sulphur dioxide

c.

Sulphur trioxide

d.

Hydrogen

Question number: 1479

» Chemistry » Carbon and Its Compounds

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MCQ▾

Question

Which gas is present in brisk effervescence, when carboxylic acid is treated with

Choices

Choice (4)Response

a.

Oxygen gas

b.

c.

Benzene

d.

Butane

Question number: 1480

» Chemistry » Carbon and Its Compounds

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MCQ▾

Question

………. number of carbon atoms form a spherical molecule of Buckminster fullerene?

Choices

Choice (4)Response

a.

90

b.

40

c.

60

d.

80

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