NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 1471 - 1478 of 1484

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Question number: 1471

» Chemistry » Acids, Bases and Salts

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MCQ▾

Question

Which of the following compound is known to be ‘Amphiprotic’?

Choices

Choice (4)Response

a.

b.

Water

c.

Ammonia

d.

Both b. and c. are correct

Question number: 1472

» Chemistry » Metals and Non-Metals

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Question

In which of the following process the non – metallic impurities are converted into respective volatile oxides which get removed?

Choices

Choice (4)Response

a.

Reduction process

b.

Smelting

c.

Calcination

d.

Roasting

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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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

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

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