Environmental Issues Test

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Environmental Issues Test - 39

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Weekly Quiz Competition

Question 1
1 / -0

Which gas is emitted by the combustion of fossil fuels?

A
$$CO_2$$

B
$$SO_2$$

C
$$H_2S$$

D
$$NO_2$$

Solution

Carbon dioxide is the major gas along with smaller amounts of methane and nitrous oxide which are emitted by the combustion of fossil fuels such as coal, oil, and natural gas and contribute to the major green house gases.
So, the correct answer is option A.
Question 2
1 / -0

Use of ________ in agricultural activities has grown quite a lot hazardous ammonia gases in the atmosphere.

A
insecticides

B
pesticides

C
fertilizers

D
all of the above

Solution

Use of insecticides, pesticides and fertilizers in agricultural activities has grown quite a lot hazardous ammonia gases in the atmosphere.
Question 3
1 / -0

What are the advantages of reforestation?

A
It helps to reduce the concentration of CO$$_2$$ in the environment.

B
It has the potential to preserve endangered species.

C
It can reverse the damage done by erosion.

D
All of the above.

Solution

Deforestation results in an increase in CO$$_2$$ concentration in the atmosphere, greenhouse gasses like CO$$_2$$ and methane significantly contribute to a changing climate. Reforestation involves the planting of the trees of same species. It is an effective method to reduce CO$$_2$$ in the atmosphere, it also helps in restoring habitat loss and also helps in fighting against climate change and help in restoring endangered species from extinction.
Thus, the correct answer is option D.
Question 4
1 / -0

The excess fertilizers not consumed by crops are washed away from land by rain and pollute _____.

A
water

B
air

C
noise

D
soil

Solution

The excess fertilizers not consumed by crops are washed away from the land by rain and pollute water. These fertilizers are chemical compounds that harm aquatic plants and animals. They also degrade the quality of water. Hence option A is correct.
Question 5
1 / -0

Air pollution takes place in two different layers of the Earth's atmosphere: _______ and __________.

A
Troposphere and stratosphere

B
Mesosphere and troposphere

C
Stratosphere and hydrosphere

D
Troposphere and hydrosphere

Solution

Air pollution takes place in two different layers of the Earth's atmosphere : troposphere and stratosphere.
Question 6
1 / -0

What is reforestation?

A
Cutting of trees.

B
Restocking of the destroyed forests by planting new trees.

C
Conversion of fertile soil into forest.

D
Conversion of forest into fertile soil.

Solution

Reforestation is restocking the destroyed forest by planting new trees. We should plant at least as many trees as we cut.
Thus, the correct answer is option B.Cancel
Question 7
1 / -0

In reforestation, the planted trees should generally be of the same .................. , which were found in forests.

A
Family

B
Kingdom

C
Species

D
Class

Solution

Reforestation is restocking of the destroyed forests by planting new trees. The planted trees should generally be of the same species which are found in the forest so that the diversity of the forest can be preserved. Growing of native species of forest can provide various benefits like the restoration of the soil, rejuvenation of flora and fauna, etc.
Question 8
1 / -0

Which of the following involves the clearing of the forest?

A
Afforestation

B
Deforestation

C
Soil erosion

D
None of the above.

Solution

Cutting of trees or clearing the forest is called as deforestation. Deforestation not only affects the land from which it is cleared but it also affects the environment. Trees are very important for the environment because they help in reducing pollution by releasing more oxygen. They protect the environment in many ways and hence, cutting of the tree is harmful and affects the environment.
Thus, the correct answer is option B.
Question 9
1 / -0

Water pollution is caused by :

A
sewage

B
domestic waste

C
food processing plant

D
All of the above

Solution

Water pollution is defined as contamination of water bodies usually as a result of human activities. It degrades the water quality and makes it unsuitable for drinking. All the above options are responsible for water pollution.
Question 10
1 / -0

The most significant sources of water pollution:

A
waste water from domestic and industrial processes

B
agricultural pollution

C
oil pollution

D
all of the above

Solution

The most significant sources of water pollution are wastewater( sewage), agricultural pollution, Oil pollution, radioactive substances, water body dumping.

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Re-Attempt Weekly Quiz Competition

Environmental Issues Test - 39

Result

Environmental Issues Test - 39

Score

-

Rank

-

SHARING IS CARING

Question 1

$$CO_2$$

$$SO_2$$

$$H_2S$$

$$NO_2$$

Solution

Question 2

insecticides

pesticides

fertilizers

all of the above

Solution

Question 3

It helps to reduce the concentration of CO$$_2$$ in the environment.

It has the potential to preserve endangered species.

It can reverse the damage done by erosion.

All of the above.

Solution

Question 4

water

air

noise

soil

Solution

Question 5

Troposphere and stratosphere

Mesosphere and troposphere

Stratosphere and hydrosphere

Troposphere and hydrosphere

Solution

Question 6

Cutting of trees.

Restocking of the destroyed forests by planting new trees.

Conversion of fertile soil into forest.

Conversion of forest into fertile soil.

Solution

Question 7

Family

Kingdom

Species

Class

Solution

Question 8

Afforestation

Deforestation

Soil erosion

None of the above.

Solution

Question 9

sewage

domestic waste

food processing plant

All of the above

Solution

Question 10

waste water from domestic and industrial processes

agricultural pollution

oil pollution

all of the above

Solution

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