Chemistry-Water [NSTSE (National Science Talent Search Exam- Unified Council) Class 6]: Questions 1 - 7 of 49

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Question number: 1

» Chemistry » Water

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MCQ▾

Question

How can we calculate concentration of water solution?

Choices

Choice (4)Response

a.

[Mass of (solute + water) ] /100

b.

[Mass of solute/mass of solution (solute + water) ] *100

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question number: 2

» Chemistry » Water

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MCQ▾

Question

What is the product when chlorine gas passes through water in the presence of diffused sunlight?

Choices

Choice (4)Response

a.

HCl + HClO

b.

HClO

c.

4HCl + O2

d.

HCl

Question number: 3

» Chemistry » Water

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MCQ▾

Question

Complete the following reaction

C + H2O (steam) →

Choices

Choice (4)Response

a.

CH3 + O2

b.

CH4 + O2

c.

CO2+ + H2

d.

CO + H2

Question number: 4

» Chemistry » Water

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MCQ▾

Question

Which of the factors affect the solubility?

Choices

Choice (4)Response

a.

Mixture type

b.

Temperature

c.

Latent Heat

d.

Anomalous Behavior

Question number: 5

» Chemistry » Water

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MCQ▾

Question

A 50gm of sugar is added to 50gm of water then concentration will be

Choices

Choice (4)Response

a.

20%

b.

50%

c.

40%

d.

100%

Question number: 6

» Chemistry » Water

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MCQ▾

Question

What is the product when acid reacts with base?

Choices

Choice (4)Response

a.

Alkalis

b.

Salt and Water

c.

Salt

d.

Water

Question number: 7

» Chemistry » Water

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MCQ▾

Question

Water has definite physical constants i. e. ?

Choices

Choice (4)Response

a.

Freezing Point

b.

Boiling Point

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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