Chemistry (NSTSE (National Science Talent Search Exam- Unified Council) Class 6): Questions 1 - 7 of 272

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Question number: 1

» Chemistry » Sorting Materials into Groups

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Question

Mixture can have their components in proportion.

Choices

Choice (4) Response

a.

Varying

b.

Fixed

c.

None of the above

d.

All of the above

Question number: 2

» Chemistry » Sorting Materials into Groups

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Question

In the process of sedimentation solid which settle down is called

Choices

Choice (4) Response

a.

Impurity

b.

Sediment’s Impurity

c.

Sediment

d.

Question does not provide sufficient data or is vague

Question number: 3

» 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: 4

» Chemistry » Sorting Materials into Groups

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Question

Honey is an example of

Choices

Choice (4) Response

a.

Homogeneous Mixture

b.

Heterogeneous Mixture

c.

Pure Substances

d.

Question does not provide sufficient data or is vague

Question number: 5

» Chemistry » Water

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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: 6

» 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: 7

» Chemistry » Air Around Us

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MCQ▾

Question

Which property is similar in rusting and burning?

Choices

Choice (4) Response

a.

Needs oxygen

b.

They forms oxide

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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