Air around Us Test

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Air around Us Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Nitrogen constitutes nearly __ % of the atmosphere.

A
45

B
78

C
21

D
0.03

Solution

The air in Earth's atmosphere is made up of approximately $$78$$ percent nitrogen and $$21$$ percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.
Hence answer is $$78$$%
Question 2
1 / -0

Name the gas which has the highest percentage in air.

A
Nitrogen

B
Oxygen

C
Carbon dioxide

D
Helium

Solution

Air consists of $$78\%$$ nitrogen, $$21\%$$ oxygen, argon, and other inert gases to the extent of about $$1.0\%$$. In addition, carbon dioxide is another important constituent of the atmosphere which varies in amount from $$0.03\%$$ to $$0.04\%$$.
Hence answer is the option A.
Question 3
1 / -0

Which of the following is correct about the percentage composition of $$O_2$$ in air?

A
21%

B
52%

C
78%

D
12.5%

Solution

The air in our atmosphere is composed of molecules of different gases. The most common gases are nitrogen (78%), oxygen (about 21%), and argon (almost 1%).
Question 4
1 / -0

__________ and __________ are the major components of the atmosphere.

A
Nitrogen and argon

B
Carbon dioxide and oxygen

C
Nitrogen and oxygen

D
Oxygen and carbon dioxide

Solution

In the atmosphere, nitrogen is 78%, oxygen is 21%, and other gases are 1% by volume. Thus nitrogen and oxygen gases are the major components of the atmosphere. Hence option C is correct.
Question 5
1 / -0

Oxygen constitutes nearly __ % of the atmosphere.

A
45

B
78

C
21

D
0.03

Solution

Air is a mixture of gases which makes up the Earth’s atmosphere.
It consists of $$78\%$$ nitrogen, $$21\%$$ oxygen and $$1\%$$ other gases and water vapour.
Hence, correct option is $$C$$.
Question 6
1 / -0

Plants consume ____________ and give _____________.

A
oxygen, carbon dioxide

B
carbon dioxide, oxygen

C
sulphur dioxide, oxygen

D
oxygen, sulphur dioxide

Solution

Plants consume carbon dioxide and give oxygen in the process of photosynthesis.
Question 7
1 / -0

The constituent of air with highest proportion :

A
$$CO_{2}$$

B
$$N_{2}$$

C
$$O_{2}$$

D
$$CO$$

Solution

Air contains $$78.09\ \%$$ nitrogen, $$20.95\ \%$$ oxygen, $$0.93\ \%$$ argon, $$0.04\ \%$$ carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around $$1\ \%$$ at sea level, and $$0.4\ \%$$ over the entire atmosphere.
Question 8
1 / -0

What process replenishes the atmosphere with oxygen?

A
Oxygen Cycle

B
Water Cycle

C
Photosynthesis

D
Both $$A$$ and $$C$$

Solution

During the process of photosynthesis, hydrogen is combined with carbon atoms to produce oxygen which is then released into the atmosphere.

Hence the option C is correct.
Question 9
1 / -0

The most common gas in the atmosphere is

A
Nitrogen

B
Oxygen

C
Hydrogen

D
Sulphur

Solution

Nitrogen (78%) and oxygen (21%) are two gases that make up the bulk of the atmosphere. Carbon dioxide, helium, ozone, argon and water vapour make up 1% of the rest of the atmosphere. Carbon monoxide is not a part of our atmosphere.
Question 10
1 / -0

Which of the following gases do not form part of the atmosphere?

A
Nitrogen

B
Chlorine

C
Carbon idoxide

D
Oxygen

E
Ozone

Solution

Nitrogen$$(N_2)$$, Carbon dioxide$$(CO_2)$$, Oxygen$$(O_2)$$, Ozone$$(O_3)$$ are part of the atmosphere but chlorine$$(Cl_2)$$ is not a part of atmosphere.
So answer is B.

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Re-Attempt Weekly Quiz Competition

Air around Us Test - 4

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Air around Us Test - 4

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SHARING IS CARING

Question 1

45

78

21

0.03

Solution

Question 2

Nitrogen

Oxygen

Carbon dioxide

Helium

Solution

Question 3

21%

52%

78%

12.5%

Solution

Question 4

Nitrogen and argon

Carbon dioxide and oxygen

Nitrogen and oxygen

Oxygen and carbon dioxide

Solution

Question 5

45

78

21

0.03

Solution

Question 6

oxygen, carbon dioxide

carbon dioxide, oxygen

sulphur dioxide, oxygen

oxygen, sulphur dioxide

Solution

Question 7

$$CO_{2}$$

$$N_{2}$$

$$O_{2}$$

$$CO$$

Solution

Question 8

Oxygen Cycle

Water Cycle

Photosynthesis

Both $$A$$ and $$C$$

Solution

Question 9

Nitrogen

Oxygen

Hydrogen

Sulphur

Solution

Question 10

Nitrogen

Chlorine

Carbon idoxide

Oxygen

Ozone

Solution

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