NSO Level 1- Science Olympiad (SOF) Class 9: Questions 552 - 556 of 1123

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Question number: 552

» Chemistry » Matter

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MCQ▾

Question

Sweety washed her clothes on a sunny day and spread them for drying. All the clothes were dried within 1 hour. She checked the atmospheric temperature. It was 38°C. Water boils at 100°C temperature. How did the clothes dried up at 40°C? The possible explanation is

1) There was no water in the washed clothes.

2) Evaporation takes place below 100°C also.

3) She has spread the clothes completely.

4) All of above

Choices

Choice (4)Response

a.

2 & 3

b.

1 & 4

c.

1 & 2

d.

1 & 3

Question number: 553

» Biology » Natural Resources

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MCQ▾

Question

Oxygen is harmful for

Choices

Choice (4)Response

a.

Nitrogen fixing bacteria

b.

Ferns

c.

Chara

d.

Mango tree

Question number: 554

» Chemistry » Structure of the Atom

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MCQ▾

Question

Which of the following is not an isotope of hydrogen atom?

Choices

Choice (4)Response

a.

Tritium

b.

Deuterium

c.

Protium

d.

Titanium

Question number: 555

» Biology » Improvement in Food Resources

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MCQ▾

Question

As marine fish stock gets depleted, the demand for more fish can be met only by

Choices

Choice (4)Response

a.

Mariculture

b.

Agriculture

c.

Horticulture

d.

Aquaculture

Question number: 556

» Biology » Diversity of Living Organisms

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MCQ▾

Question

Which of the following statements best define bio-diversity?

Choices

Choice (4)Response

a.

It refers to a large naturally occurring community of flora and fauna occupying a major habitat.

b.

It refers to organisms living in an area that are dependent on each other for food.

c.

It refers to the variety of life forms found in a particular habitat.

d.

It refers to an ecosystem with plants and animals of unusual scientific and natural interest.

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