NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 1825 - 1831 of 2029

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Question number: 1825

» Chemistry » Water

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MCQ▾

Question

Effect of cooling on a saturated water solution

Choices

Choice (4) Response

a.

Solubility of solid remains same

b.

Solubility of solid some time increases and decreases

c.

Solubility of solid decreases

d.

Solubility of solid increases

Question number: 1826

» Chemistry » Air Around Us

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Question

Chemical formula of oxygen

Choices

Choice (4) Response

a.

2O

b.

2O2

c.

O2

d.

O

Question number: 1827

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

What is filtration?

Choices

Choice (4) Response

a.

Technique of separation of an insoluble solid from a liquid by heating

b.

Technique of separation of soluble solids from a liquid by heating the mixture

c.

Technique of separation of an insoluble solid from a liquid using a filter paper and funnel arrangement

d.

None of the above

Question number: 1828

» Chemistry » Air Around Us

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MCQ▾

Question

Is used in fire extinguisher.

Choices

Choice (4) Response

a.

Oxygen

b.

Carbon di-oxide

c.

Carbon

d.

Nitrogen

Question number: 1829

» Chemistry » Air Around Us

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MCQ▾

Question

Causes brain damage in children.

Choices

Choice (4) Response

a.

Oxygen

b.

Lead

c.

Mercury

d.

None of the above

Question number: 1830

» Chemistry » Air Around Us

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MCQ▾

Question

Radon is used for treatment of.

Choices

Choice (4) Response

a.

Cancer

b.

Respiratory Problem

c.

Mental Problem

d.

Question does not provide sufficient data or is vague

Question number: 1831

» Chemistry » Sorting Materials into Groups

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MCQ▾

Question

Sedimentation and decantation refers the same process.

Choices

Choice (4) Response

a.

Sometimes true

b.

Sometimes false

c.

True

d.

False

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