NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1783 - 1790 of 2029

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Question number: 1783

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Mixture of liquid + gas is always.

Choices

Choice (4) Response

a.

Homogeneous Mixture

b.

Heterogeneous Mixture

c.

All of the above

d.

Question does not provide sufficient data or is vague

Question number: 1784

» Chemistry » Air Around Us

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True-False▾

Question

Is the Following Statement True or False?

‘Helium is very heavy gas’.

Question number: 1785

» Chemistry » Water

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MCQ▾

Question

Who has recognized that water is a chemical compound and made up of two elements?

Choices

Choice (4) Response

a.

Henry Cavendish

b.

A. I. Lavoisier

c.

Robert Boyle

d.

None of the above

Question number: 1786

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Homogeneous liquid – liquid mixture are also called.

Choices

Choice (4) Response

a.

Miscible liquid

b.

Immiscible liquid

c.

Filtered liquid

d.

All of the above

Question number: 1787

» Chemistry » Water

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MCQ▾

Question

What happens when calcium is react with litmus paper?

Choices

Choice (4) Response

a.

Turns blue litmus to red

b.

Turns red litmus to blue

c.

Neutral

d.

Question does not provide sufficient data or is vague

Question number: 1788

» Chemistry » Water

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MCQ▾

Question

Why sodium kept in kerosene oil?

Choices

Choice (4) Response

a.

It is poison

b.

It catches fire

c.

It turns its color

d.

It forms oxygen

Question number: 1789

» Chemistry » Air Around Us

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MCQ▾

Question

Which of the following are air pollutants?

Choices

Choice (4) Response

a.

Dust

b.

Smoke

c.

Soot

d.

All a. , b. and c. are correct

Question number: 1790

» Chemistry » Water

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MCQ▾

Question

________ gas dissolved in water is main source of survival for marine plants.

Choices

Choice (4) Response

a.

Carbon di oxide

b.

Hydrogen

c.

Oxygen

d.

Xenon

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