NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1768 - 1774 of 2029

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Question number: 1768

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Copper is a ________ material.

Choices

Choice (4) Response

a.

Good conducting

b.

Insulating

c.

Soluble

d.

Question does not provide sufficient data or is vague

Question number: 1769

» Chemistry » Water

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MCQ▾

Question

If 32gm of common salt is added to 68gm of water the concentration will be

Choices

Choice (4) Response

a.

32%

b.

9%

c.

72%

d.

68%

Question number: 1770

» Chemistry » Sorting Materials into Groups

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Question

Mixture of iron and sand can be separated by

Choices

Choice (4) Response

a.

Magnetic separation

b.

Winnowing

c.

Filtration

d.

All of the above

Question number: 1771

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

The and are not fixed in mixture.

Choices

Choice (4) Response

a.

Proportion and property

b.

Melting and Boiling Point

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 1772

» Chemistry » Water

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MCQ▾

Question

In which of the reaction water acts as a catalyst?

Choices

Choice (4) Response

a.

H2 + Cl2 → HCl

b.

2Na + 2H2O → 2NaOH + H2

c.

Mg + H2O→ MgO + H2

d.

Ca + 2H2O → Ca (OH) 2 + H2

Question number: 1773

» Chemistry » Air Around Us

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MCQ▾

Question

Name the gas which is known as inactive gas in the mixture of air.

Choices

Choice (4) Response

a.

Nitrogen

b.

Inert gases

c.

Carbon di-oxide

d.

All a. , b. and c. are correct

Question number: 1774

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Filtration is the process in which

Choices

Choice (4) Response

a.

Filter paper is kept near liquid

b.

Liquid passes through filter paper

c.

Question does not provide sufficient data or is vague

d.

All of the above

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