NSO Level 1- Science Olympiad (SOF) Class 9: Questions 283 - 287 of 1123

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Question number: 283

» Biology » Improvement in Food Resources

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MCQ▾

Question

Which of these animal husbandries need low investment?

Choices

Choice (4)Response

a.

Fish farming

b.

Poultry farming

c.

Cattle farming

d.

Bee-keeping

Question number: 284

» Chemistry » Structure of the Atom

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MCQ▾

Question

Which of the following statements is true about isotopes?

Choices

Choice (4)Response

a.

Chemical properties of isotopes of an element are similar but their physical properties are different.

b.

Many elements consists of a mixture of isotopes

c.

Atomic number of isotopes is same but mass numbers are different

d.

All a. , b. and c. are correct

Question number: 285

» Biology » Improvement in Food Resources

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MCQ▾

Question

Weeds affect the crops plants by

Choices

Choice (4)Response

a.

Killing of plants in field before they grow

b.

Competing for various resources of crops causing low availability of nutrients

c.

Dominating the plants to grow

d.

All a. , b. and c. are correct

Question number: 286

» Chemistry » Matter

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MCQ▾

Question

Identify X, Y & Z in the diagram

Change of matter state

Change of Matter State

Choices

Choice (4)Response

a.

X = Deposition, Y = Condensation, Z = Freezing

b.

X = Freezing, Y = Deposition, Z = Condensation

c.

X = Condensation, Y = Freezing, Z = Deposition

d.

All of the above

Question number: 287

» Chemistry » Structure of the Atom

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MCQ▾

Question

Which of the following is not a part of an atom?

Choices

Choice (4)Response

a.

Proton

b.

Electron

c.

Neon

d.

Neutron

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