NSO Level 1- Science Olympiad (SOF) Class 9: Questions 283 - 287 of 1128

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Question 283

Question

MCQ▾

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 284

Question

MCQ▾

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 285

Question

MCQ▾

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 286

Question

MCQ▾

Identify X, Y & Z in the diagram

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 287

Question

MCQ▾

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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