NSO Level 1- Science Olympiad (SOF) Class 8: Questions 250 - 256 of 1076

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Question number: 250

» Crop Production and Management

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MCQ▾

Question

The terms moat, dhekhli and rahat are used in

Choices

Choice (4)Response

a.

Traditional methods of storing

b.

Traditional methods of weeding

c.

Traditional methods of ploughing

d.

Traditional methods of irrigation

Question number: 251

» Conservation of Plants and Animals

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MCQ▾

Question

The adverse effect of deforestation is

Choices

Choice (4)Response

a.

Increasing temperature and pollution level

b.

Increasing level of carbon dioxide

c.

Decreasing level of ground water

d.

All a. , b. and c. are correct

Question number: 252

» Microorganisms

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MCQ▾

Question

Ring worm in humans is caused by

Choices

Choice (4)Response

a.

Algae

b.

Fungus

c.

Bacteria

d.

Virus

Question number: 253

» Microorganisms

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MCQ▾

Question

Which of the following is not used in chemical method of food preservation?

Choices

Choice (4)Response

a.

Sodium benzoate

b.

Naphthalene

c.

Common salt

d.

Sugar

Question number: 254

» Microorganisms

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MCQ▾

Question

Consuming spoilt food may cause

Choices

Choice (4)Response

a.

Food poisoning

b.

Pasteurization

c.

Vaccination

d.

Fermentation

Question number: 255

» Microorganisms

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MCQ▾

Question

The process of injecting dead and weakened microbes to our body to prevent the disease caused by them is called

Choices

Choice (4)Response

a.

Pasteurization

b.

Fermentation

c.

Vaccination

d.

Freezing

Question number: 256

» Conservation of Plants and Animals

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MCQ▾

Question

Which of the following statements is true about endemic species?

Choices

Choice (4)Response

a.

Endemic species never become endangered

b.

They are found exclusively in a specific habitat.

c.

They are not affected by climatic conditions.

d.

They are found only in protected areas

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