NSO Level 1- Science Olympiad (SOF) Class 6: Questions 196 - 199 of 201

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Question 196

Question

MCQ▾

The gas X is only about 20 parts out of 100 parts of air in the atmosphere. It is needed for decomposition of organic matter to take place. The gas X is

Choices

Choice (4)Response

a.

Carbon dioxide

b.

Water vapour

c.

Nitrogen

d.

Oxygen

Question 197

Question

MCQ▾

Read the following statements.

(i) I am present in air.

(ii) I enter your lungs when you breathe in.

(iii) Your body needs me to produce energy.

Which of the following gases is being described by the above statement?

Choices

Choice (4)Response

a.

Nitrogen

b.

Oxygen

c.

Carbon dioxide

d.

Hydrogen

Question 198

Question

MCQ▾

Read the given paragraph.

The water droplets come together to form (i) . These are heavy and the air cannot hold them, therefore, they fall down as (ii) . However, if the temperature is very low, they freeze in the atmosphere and fall as (iii) .

Select the option that correctly fills the blanks in the above paragraph.

Choices

Choice (4)Response

a.

Clouds, Rain, Snow

b.

Rain, Clouds, Snow

c.

Condense, Rain, Large droplets

d.

Large droplets, Rain, Snow

Question 199

Question

MCQ▾

Which of the following actions will help in reducing pollution?

(i) Treatment of sewage to remove human waste

(ii) Using unleaded petrol in cars

(iii) Spraying pesticides on plants to kill pests

(iv) Restricting smoking in public areas.

Choices

Choice (4)Response

a.

(i) , (ii) and (iv)

b.

(iii) and (iv)

c.

(i) and (ii)

d.

(i) , (ii) and (iii)

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