Pollution of Air and Water Test

Result

Pollution of Air and Water Test - 16

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Weekly Quiz Competition

Question 1
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 2
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 3
1 / -0

When harmful substances such as sewage, toxic chemicals get mixed with water, then:

A
the water becomes more pure.

B
the water get polluted.

C
the taste of water does not change.

D
none of these

Solution

When harmful substances such as sewage, toxic chemicals, silt, etc. get mixed with water, the water does not remain pure and its taste can change. It leads to situation where we say that the water is polluted.
Hence, option B is correct.
Question 4
1 / -0

An ambitious plan to save the river Ganga is called:

A
Ganga Action Plan

B
Ganga Junction Plan

C
Ganga Activation Plan

D
Ganga Cleaning Plan

Solution

The first river action plan i.e. the Ganga Action Plan was taken up in 1985. It was launched by Prime Minister Rajeev Gandhi, with the ambition of reducing pollution and improving the water quality of the river Ganga.
Hence, the correct option is A.
Question 5
1 / -0

Some of the major contaminants of water are:

A
Sewage

B
Agricultural chemicals

C
Industrial waste

D
All of the above

Solution

Sewage, agricultural chemicals, and industrial waste are some of the major contaminants of water. They are Soluble or insoluble forms, all of these release toxins and harmful chemicals in the water.
Question 6
1 / -0

Boiling kills the germs present in the _____.

A
Air

B
Water

C
Body

D
None of the above

Solution

Boiling kills the germs present in the water. Boiling water kills or inactivates viruses, bacteria, protozoa and other pathogens by using heat to damage structural components and disrupt essential life processes.
Question 7
1 / -0

Water that is purified and fit for drinking is known as:

A
Saline water

B
aerated water

C
mineral water

D
potable water

Solution

Water that has a high amount of dissolved salt is called saline water. Water to which air is added is called aerated water. Mineral water contains minerals like magnesium, calcium, sodium, etc. But potable water is the term used for water that is purified and fit to drink. Thus option D is correct.
Question 8
1 / -0

The process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water is known as:

A
Decantation

B
Water purification

C
Filtration

D
Sedimentation

Solution

Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water.
Question 9
1 / -0

What should be our mantra to reduce water pollution?

A
Reduce

B
Reuse

C
Recycle

D
All of the above

Solution

Reduce, reuse and recycle should be our mantra to reduce water pollution.
Question 10
1 / -0

Ganga Action Plan was aimed to:

A
reduce the pollution level of the river

B
increase the pollution level of the river

C
reduce the water level of the river

D
increase the water level of the river

Solution

Ganga Action Plan was aimed to reduce the pollution levels in the river, hence improving the quality of water.

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Re-Attempt Weekly Quiz Competition

Pollution of Air and Water Test - 16

Result

Pollution of Air and Water Test - 16

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Rank

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SHARING IS CARING

Question 1

45

78

21

0.03

Solution

Question 2

45

78

21

0.03

Solution

Question 3

the water becomes more pure.

the water get polluted.

the taste of water does not change.

none of these

Solution

Question 4

Ganga Action Plan

Ganga Junction Plan

Ganga Activation Plan

Ganga Cleaning Plan

Solution

Question 5

Sewage

Agricultural chemicals

Industrial waste

All of the above

Solution

Question 6

Air

Water

Body

None of the above

Solution

Question 7

Saline water

aerated water

mineral water

potable water

Solution

Question 8

Decantation

Water purification

Filtration

Sedimentation

Solution

Question 9

Reduce

Reuse

Recycle

All of the above

Solution

Question 10

reduce the pollution level of the river

increase the pollution level of the river

reduce the water level of the river

increase the water level of the river

Solution

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