NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1788 - 1795 of 2029

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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

Question number: 1791

» Chemistry » Water

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MCQ▾

Question

At standard temperature and pressure (STP) water has what type of state?

Choices

Choice (4)Response

a.

Gas

b.

Liquid

c.

Solid

d.

Question does not provide sufficient data or is vague

Question number: 1792

» Chemistry » Air Around Us

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MCQ▾

Question

Which of the following is electronic configuration of Nitrogen?

Choices

Choice (4)Response

a.

2,5

b.

2,2, 2,1

c.

7

d.

5,2

Question number: 1793

» Chemistry » Air Around Us

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MCQ▾

Question

Nitrogen is in air.

Choices

Choice (4)Response

a.

21%

b.

78%

c.

87%

d.

83%

Question number: 1794

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Which of the following materials has the lowest specific heat capacity among them?

Choices

Choice (4)Response

a.

Water

b.

Pure Water

c.

Iron

d.

Salty water

Question number: 1795

» Chemistry » Air Around Us

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MCQ▾

Question

Who discovered oxygen?

Choices

Choice (4)Response

a.

Yogesh Priestley

b.

Joseph Priestley

c.

Antoine Lavoisier

d.

All of the above

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