NSO Level 1- Science Olympiad (SOF) Class 9: Questions 514 - 520 of 1123

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Passage

Directions: Some techniques for the separation of components are given in the figures. Answer below questions after observing the figures carefully

Techniques for the separation of components

Techniques for the Separation of Components

Techniques for the separation of components

Question number: 514 (6 of 6 Based on Passage) Show Passage

» Chemistry » The Nature of Matter

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MCQ▾

Question

Which of the arrangements is used to separate iron from its ore

Choices

Choice (4) Response

a.

Figure 3

b.

Figure 1

c.

Figure 2

d.

None of the above

Question number: 515

» Biology » Natural Resources

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MCQ▾

Question

What would happen, if all oxygen present in the environment is converted to ozone?

Choices

Choice (4) Response

a.

It will become poisonous and kill living forms

b.

We will be protected more

c.

Ozone is not stable and hence it will be toxic

d.

It will help harmful radiations to reach earth and damage many life forms

Question number: 516

» Physics » Motion

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Question

Negative acceleration is called

Choices

Choice (4) Response

a.

Acceleration

b.

Retardation

c.

Speed

d.

Velocity

Question number: 517

» Chemistry » Matter

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MCQ▾

Question

The process by which a liquid changes to its solid state is called

Choices

Choice (4) Response

a.

evaporation

b.

diffusion

c.

melting

d.

solidification

Question number: 518

» Biology » Improvement in Food Resources

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MCQ▾

Question

Poultry fowl is not susceptible to

Choices

Choice (4) Response

a.

Bacteria

b.

Virus

c.

Fungi

d.

Protozoa

Question number: 519

» Biology » Improvement in Food Resources

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MCQ▾

Question

Oil seeds are a good source of

Choices

Choice (4) Response

a.

Vitamins

b.

Minerals

c.

Fats

d.

Proteins

Question number: 520

» Chemistry » Matter

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MCQ▾

Question

Distributors add strong smelling theol called mercaptan to natural gas while filling in cylinders. The possible reason may be

Choices

Choice (4) Response

a.

It is strong smelling

b.

It diffuses quickly in the air

c.

Leakage of gas can be easily detected

d.

All a. , b. and c. are correct

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