Chemistry-Water [NSTSE (National Science Talent Search Exam- Unified Council) Class 6]: Questions 1 - 8 of 49

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Question 1

Question

MCQ▾

How can we calculate concentration of water solution?

Choices

Choice (4)Response

a.

b.

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question 2

Question

MCQ▾

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 3

Question

MCQ▾

Complete the following reaction

C + H2O (steam) ⇾

Choices

Choice (4)Response

a.

CH3 + O2

b.

CH4 + O2

c.

CO2 + + H2

d.

CO + H2

Question 4

Question

MCQ▾

Which of the factors affect the solubility?

Choices

Choice (4)Response

a.

Mixture type

b.

Temperature

c.

Latent Heat

d.

Anomalous Behavior

Question 5

Question

MCQ▾

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 6

Question

MCQ▾

What is the product when acid reacts with base?

Choices

Choice (4)Response

a.

Alkalis

b.

Salt and Water

c.

Salt

d.

Water

Question 7

Question

MCQ▾

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

Question 8

Question

MCQ▾

Which of the following is the water՚s chemical formula?

Choices

Choice (4)Response

a.

H2SO4

b.

HCL

c.

H3O +

d.

H2O

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