Environmental Issues Test

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Environmental Issues Test - 32

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following gases is regarded as an atmospheric pollutant?

A
O$$_2$$

B
O$$_3$$

C
SO$$_2$$

D
N$$_2$$

Solution

Oxygen (O$$_2$$), nitrogen (N$$_2$$) and ozone (O$$_3$$) are components of the atmosphere. So, they are naturally present. But, sulfur dioxide (SO$$_2$$) is a pollutant causing diseases in humans, plants and animals.
Hence, the correct option is 'C'.
Question 2
1 / -0

What is the main source of water pollution in India?

A
Discharge of untreated sewage

B
Bathing

C
Discharge of industrial waste

D
Both A and C

Solution

Sources of water pollution to rivers in India are done mainly by the industries and factories pouring untreated chemical waste in the rivers which are highly toxic in nature and another source is sewage waste from domestic households and municipalities goes directly to the river bodies causing major water pollution as it is highly pathogenic in nature.Bathing is not the major source as it forms a minor portion of the major sewage waste.
Question 3
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 4
1 / -0

Farming without the use of chemicals as fertilizers, herbicides and pesticides is known as ________.

A
Organic farming

B
Chemical farming

C
Manure farming

D
Layer farming
Question 5
1 / -0

Chlorofluorocarbons deplete _______ layer.

A
Ozone

B
Troposphere

C
Ammonium

D
Oxygen
Question 6
1 / -0

Increasing amount of $$CO_2$$ in environment is causing ________.

A
Green house effect

B
Global warming

C
Ozone layer depletion

D
Both A and B
Question 7
1 / -0

Name the gases which cause acid rain.

A
$$SO_2$$ and $$NO _2$$ which forms sulfuric acid and nitric acid

B
$$O_2$$ and $$NO_2$$ which forms nitric acid and water

C
$$CaCO_3$$ and $$SO_2$$ which forms sulfuric acid

D
None of the above
Question 8
1 / -0

Main cause of extinction of species from tropical areas is

A
Afforestation

B
Deforestation

C
Gamma diversity

D
Delta diversity

Solution

The main fundamental cause of animal extinction in most recent times from tropical areas is deforestation. Deforestation is the removal of a forest or stand of trees where the land is thereafter converted to a non-forest use. There are many species in tropical areas which are dependent upon plants and deforestation leads them to extinct.
Therefore, the correct answer is option B.
Question 9
1 / -0

Deforestation is the major cause of

A
Transpiration

B
Genetic erosion

C
Desertification of habitat

D
All of the above

Solution

Deforestation is the cutting of trees. When trees are lost due to deforestation, the result can be a drier climate and desertification, or the transformation of the once fertile land to desert.
Deforestation is the term that describes the cutting down or clearing of trees from a wooded area.
Tree roots absorb water from the ground and return water vapor back to the atmosphere. If trees are removed and can no longer contribute to the water cycle and thus, transform into a much drier climate. This dry environment can spread due to a decrease in atmospheric water vapor and results in a decline in precipitation levels in the area and leads to the desertification
Thus, the correct answer is option C.
Question 10
1 / -0

Peak concentration of ozone occurs in the atmosphere above a height of

A
10 km

B
15 km

C
17 km

D
25 km

Solution

The stratosphere, of the atmosphere, contains the ozone. It protects us from harmful ultraviolet radiations. It is the layer which that extends approximately 50 km (about 30 miles) above earth's surface. Peak concentrations of ozone are found at altitudes from 20 to 25 km. Thus, the correct answer is option D.

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Re-Attempt Weekly Quiz Competition

Environmental Issues Test - 32

Result

Environmental Issues Test - 32

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SHARING IS CARING

Question 1

O$$_2$$

O$$_3$$

SO$$_2$$

N$$_2$$

Solution

Question 2

Discharge of untreated sewage

Bathing

Discharge of industrial waste

Both A and C

Solution

Question 3

Soil and water pollution

Air and sound pollution

Only soil pollution

Only air pollution

Solution

Question 4

Organic farming

Chemical farming

Manure farming

Layer farming

Question 5

Ozone

Troposphere

Ammonium

Oxygen

Question 6

Green house effect

Global warming

Ozone layer depletion

Both A and B

Question 7

$$SO_2$$ and $$NO _2$$ which forms sulfuric acid and nitric acid

$$O_2$$ and $$NO_2$$ which forms nitric acid and water

$$CaCO_3$$ and $$SO_2$$ which forms sulfuric acid

None of the above

Question 8

Afforestation

Deforestation

Gamma diversity

Delta diversity

Solution

Question 9

Transpiration

Genetic erosion

Desertification of habitat

All of the above

Solution

Question 10

10 km

15 km

17 km

25 km

Solution

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