Pollution of Air and Water Test

Result

Pollution of Air and Water Test - 17

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Weekly Quiz Competition

Question 1
1 / -0

Rain, snow or fog which is acidic in nature, is known as:

A
acid rain

B
acid snow

C
acid fog

D
all of the above

Solution

Acid rain includes any form of precipitation with acidic components from the atmosphere.
This can include rain, snow, fog, hail, or even dust that is acidic.
This happens when oxides of sulfur and nitrogen that are emitted by the industries react with water and oxygen in the atmosphere to form sulphuric acid and nitric acid respectively.
These acids are responsible for the acidic nature of the rains. Their $$pH$$ is usually between $$5.5$$ to $$5$$.
Thus, the correct option is A.
Question 2
1 / -0

Photochemical smog is related to pollution of:

A
Soil

B
Air

C
Water

D
None of these

Solution

Photochemical smog is produced when pollutants from the combustion of fossil fuels react with sunlight. The energy in the sunlight converts the pollutants into other toxic chemicals. For photochemical smog to form, there must be other pollutants in the air, specifically nitrous oxides and other volatile organic compounds (VOCs).
Hence, the correct option is $$B$$
Question 3
1 / -0

Sterilization of water by addition of chlorine for treatment against bacterial infection is known as:

A
sedimentation

B
filtering

C
chlorination

D
All of the above

Solution

Sterilization of water by addition of chlorine is known as chlorination. Chlorine acts as a disinfectant, killing disease causing pathogens.
Question 4
1 / -0

National Mission for Clean Ganga (NMCG) was launched in _____.

A
2014

B
2015

C
2016

D
2019

Solution

National Mission for Clean Ganga (NMCG) 'Namami Gange Programme', is an integrated conservation mission, approved as 'Flagship Programme' by the union government in June $$2014$$.
Question 5
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 6
1 / -0

The progressive warming up of the earth's surface is mainly due to:

A
automobile exhaust

B
blanketing effect of carbon dioxide in atmosphere

C
reforestation

D
thickening of ozone layer

Solution

This is because carbon dioxide gas ($$CO_2$$) produced by various activities on earth like combustion of fossil fuel, burning of coal, etc. goes into the atmosphere and makes a thick layer, this layer allows sunlight to enter the atmosphere but does not allow it to exit, the heat gets trapped into the atmosphere and leads to the warming up of the surface.
This is the main reason for warming up the earth's surface.
Hence, option $$B$$ is correct.
Question 7
1 / -0

Surface water contains:

A
suspended impurity

B
organic matter

C
bacteria

D
all of the above

Solution

Surface water typically contains suspended solid content, bacteria, algae, organic matter, creating bad taste and odour.
Hence, option D is correct.
Question 8
1 / -0

The life and appearance of the historic monuments like Taj Mahal are likely to be damaged by the presence of:

A
hydrocarbons

B
excess of $$SO_{2}$$

C
$$CFC$$

D
$$Cl_{2}$$

Solution

$$SO_2$$ is a suffocating and extremely pungent smelling gas. In the presence of metallic oxide or other catalysts, $$SO_2$$ reacts with oxygen of air and water vapour forming sulphuric acid ($$H_2SO_4$$) which has corrosive effect on buildings.
The life and appearance of the Taj Mahal has been brought down by the action of excess $$SO_2$$ in the atmosphere.
Question 9
1 / -0

The quantity of $$CO_{2}$$ in atmosphere can be decreased by:

A
rain

B
forests

C
vegetation

D
all of the above

Solution

Plants play a very important role in reducing the amount of $$CO_2$$ in the atmosphere, plants use $$CO_2$$ to make food and release oxygen. During rain, water gets reacted with $$CO_2$$ in the atmosphere and form $$H_2CO_3$$ and hence reduce the amount of $$CO_2$$ in the atmosphere.
Question 10
1 / -0

The gas which causes yellowing of Taj mahal:

A
$$H_{2}S$$

B
$$SO_{2}$$

C
$$CO_{2}$$

D
$$NH_{3}$$

Solution

$$SO_2$$ reacts with the moisture present in the air and forms sulphuric acid. The sulphuric acid formed comes down along with rainwater and is known as acid rain. The acid rain that falls on the marbles leads to corrosion and yellowing of the marble. Thus yellowing of marble is not caused by $$H_2S$$, $$CO_2$$ or $$NH_3$$ instead it is caused by $$SO_2$$.
Hence, option B is correct.

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Re-Attempt Weekly Quiz Competition

Pollution of Air and Water Test - 17

Result

Pollution of Air and Water Test - 17

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SHARING IS CARING

Question 1

acid rain

acid snow

acid fog

all of the above

Solution

Question 2

Soil

Air

Water

None of these

Solution

Question 3

sedimentation

filtering

chlorination

All of the above

Solution

Question 4

2014

2015

2016

2019

Solution

Question 5

$$CO_{2}$$

$$N_{2}$$

$$O_{2}$$

$$CO$$

Solution

Question 6

automobile exhaust

blanketing effect of carbon dioxide in atmosphere

reforestation

thickening of ozone layer

Solution

Question 7

suspended impurity

organic matter

bacteria

all of the above

Solution

Question 8

hydrocarbons

excess of $$SO_{2}$$

$$CFC$$

$$Cl_{2}$$

Solution

Question 9

rain

forests

vegetation

all of the above

Solution

Question 10

$$H_{2}S$$

$$SO_{2}$$

$$CO_{2}$$

$$NH_{3}$$

Solution

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