Pollution of Air and Water Test

Result

Pollution of Air and Water Test - 23

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Weekly Quiz Competition

Question 1
1 / -0

Environmental pollution can be controlled by:

A
spraying insecticides and pesticides

B
open burning of tree stumps

C
treating factory wastes before disposing them

D
disposing hot water from power stations into the sea

Solution

Environmental pollution can be controlled by treating factory wastes before disposing of them. So, if we treat wastewater before disposing of in a river, it will surely decrease the amount of dumped pollutants.

For example- Steel industries have a high concentration of cyanide in it, and it led to harmful effect. So, treatment is really necessary.

Hence, option C is correct.
Question 2
1 / -0

Which water pollutant is incorrectly paired with the source?

A
Oil spill - ship

B
Pesticide - oil palm plantation

C
Sewage - large factory

D
Smoke - farm

Solution

Sewage comes from domestic waste or municipal waste from sewers, which does not include any industrial waste but only untreated sewage from local residential or commercial areas.

Oil spills can occur when petroleum products or fuel is leaked from ships or the tankers carried by them. Pesticides are used in farms and plantations, while smoke is released from automobiles, machines, factories, etc.
Question 3
1 / -0

One of the causes of water pollution, is excessive use of ___________ and ___________ by the farmers:

A
manure, water

B
fertilizers, pesticides

C
fertilizers, seeds

D
pesticides, seeds

Solution

Excessive use of fertilisers and pesticides in fields can lead to their seepage into the ground and mixing with groundwater. They can also be washed away with rain and carried to water bodies, where they can contaminate the water and the aquatic animals, especially fish. Human beings consuming such contaminated fish might be fatally poisoned.
Also, rivers polluted by fertilisers allow the growth of algae that use dissolved oxygen in the water for their sustenance. This leads to oxygen deficiency in water, which can cause the death of other aquatic animals.
Question 4
1 / -0

Carbon monoxide emitted by automobiles is poisonous because?

A
It changes $$O_2$$ to $$CO_2$$.

B
It prevents breathing.

C
It reduces oxygen carrying capacity of blood.

D
It makes it difficult to see.

Solution

Carbon monoxide mainly causes adverse effects in humans by combining with haemoglobin in the blood and preventing it from carrying oxygen to the tissues.
So, option C is correct.
Question 5
1 / -0

Monuments of marble can be destroyed by:

A
sulphur dioxide pollution

B
carbon monoxide pollution

C
pesticide pollution

D
dust particles

Solution

Sulphur dioxide fumes mix with air moisture or water vapor and come down as acid rain in the form of sulphuric acid. This acid rain can damage the marble tombs which are made up of calcium carbonate and its reaction with acid rain forms calcium sulfate which gives a yellowish color of acid to the marble. This gradually destroys the marble structure over a period of time.
Hence, option $$A$$ is correct.
Question 6
1 / -0

Fertilisers are a source of which types of pollution?

A
Soil and water pollution

B
Air and sound pollution

C
Only soil pollution

D
Only air pollution

Solution

Excessive use of fertilisers reduces the fertility of soil. Moreover, it also causes water pollution as the fertilisers are washed away into water bodies where they promote the growth of unwanted plants like weeds, apart from algae.
Question 7
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Which of these is the major air pollutant in cities like Delhi and Kolkata?

A
Carbon monoxide

B
Hydrocarbons

C
Suspended particulate matter

D
Oxides of nitrogen

Solution

According to the air pollution data, the suspended particulate matter (SPM) level is highest in Delhi and Kolkata with $$70 \%$$ of residents suffering from respiratory disorders and lung cancers due to high SPM levels in populated areas.
Question 8
1 / -0

Which of the following pollutants is not present in the vehicular exhaust emissions?

A
Lead

B
Ammonia

C
Carbon monoxide

D
Particulate matter

Solution

Oxides of carbon such as $$CO$$ and $$CO_2$$, oxides of nitrogen, oxides of sulphur, lead, are present along with particulate matter in the vehicular exhaust gases, but ammonia is not formed in these vehicular emissions.

Option B is correct.
Question 9
1 / -0

Sewage water is purified for recycling by the action of:

A
fish

B
micro-organisms

C
fuels

D
non-biodegradable chemicals

Solution

Various microbial processes are used to treat this sewage waste by biological methods using microbes feeding on this waste. The bacteria and protozoa consume biodegradable soluble organic contaminants (e.g. sugars, fats, organic short-chain carbon molecules etc.) and bind much of the less soluble fractions into floc. The water is purified and can be recycled and reused again.
Question 10
1 / -0

There is a possibility of melting of polar ice caps and increase in the level of sea water due to:

A
Depletion of ozone layer

B
Green house effect

C
Acid rain

D
All of the above

Solution

The greenhouse effect of the earth means the trapping of infrared radiations from the atmosphere and not reflecting it back due to higher levels of carbon dioxide as a major pollutant that traps radiations.
This effect causes the rise in the global temperature resulting in the melting of polar ice caps and rises in sea level.
Option B is correct.

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Re-Attempt Weekly Quiz Competition

Pollution of Air and Water Test - 23

Result

Pollution of Air and Water Test - 23

Score

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Rank

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SHARING IS CARING

Question 1

spraying insecticides and pesticides

open burning of tree stumps

treating factory wastes before disposing them

disposing hot water from power stations into the sea

Solution

Question 2

Oil spill - ship

Pesticide - oil palm plantation

Sewage - large factory

Smoke - farm

Solution

Question 3

manure, water

fertilizers, pesticides

fertilizers, seeds

pesticides, seeds

Solution

Question 4

It changes $$O_2$$ to $$CO_2$$.

It prevents breathing.

It reduces oxygen carrying capacity of blood.

It makes it difficult to see.

Solution

Question 5

sulphur dioxide pollution

carbon monoxide pollution

pesticide pollution

dust particles

Solution

Question 6

Soil and water pollution

Air and sound pollution

Only soil pollution

Only air pollution

Solution

Question 7

Carbon monoxide

Hydrocarbons

Suspended particulate matter

Oxides of nitrogen

Solution

Question 8

Lead

Ammonia

Carbon monoxide

Particulate matter

Solution

Question 9

fish

micro-organisms

fuels

non-biodegradable chemicals

Solution

Question 10

Depletion of ozone layer

Green house effect

Acid rain

All of the above

Solution

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