NSO Level 1- Science Olympiad (SOF) Class 6: Questions 193 - 197 of 201

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Passage

Diagram shows the gases in the atmosphere.

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Created with Highcharts 6.0. 3Gases in the atmosphereInactive gases (1%) Inactive gases (1%) Nitrogen (78%) Nitrogen (78%) Oxygen (21%) Oxygen (21%) Nitrogen (78%) Gases in the atmosphere: 78

Question number: 193 (1 of 2 Based on Passage) Show Passage

» Air and Water

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MCQ▾

Question

Based on the above figure, which of these is the most accurate description of air?

Choices

Choice (4) Response

a.

One-half part is nitrogen and one-half oxygen and other gases

b.

One-fifth part is oxygen and four-fifths contains nitrogen and other gases.

c.

Three-quarters part is oxygen and one-third nitrogen and other gases

d.

Two-thirds part is nitrogen, one-third oxygen and one-tenth other gases

Question number: 194 (2 of 2 Based on Passage) Show Passage

» Air and Water

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MCQ▾

Question

What is the most abundant noble gas in the atmosphere?

Choices

Choice (4) Response

a.

Argon

b.

Neon

c.

Xenon

d.

Nitrogen

Question number: 195

» Air and Water

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MCQ▾

Question

Which of the following statement is incorrect?

Choices

Choice (4) Response

a.

Acid rain which can cause damage to buildings occurs due to air pollution.

b.

Ozone layer which prevents harmful UV radiations reaching the Earth’s surface is present in stratosphere.

c.

Mesosphere is the lower most layer of atmosphere, extending upto 16 km from the Earth’s surface.

d.

Air contains water vapours, dust and smoke

Question number: 196

» Air and Water

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MCQ▾

Question

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 number: 197

» Air and Water

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MCQ▾

Question

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

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