NSO Level 1- Science Olympiad (SOF) Class 9: Questions 517 - 522 of 1123

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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

Question number: 521

» Biology » Improvement in Food Resources

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MCQ▾

Question

Disease cannot spread from one row of crops to the other. Which of these methods has to be implemented to have this advantage?

Choices

Choice (4)Response

a.

Intercropping

b.

Mixed cropping

c.

Crop-rotation

d.

All of the above

Question number: 522

» Chemistry » Structure of the Atom

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MCQ▾

Question

In the atom of an element, 7 electrons are present in the outermost shell. If it acquires inert gas configuration by receiving more electrons, charge of the ion formed will be

Choices

Choice (4)Response

a.

1-

b.

7+

c.

7-

d.

1+

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