Natural Resources Test

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Natural Resources Test - 37

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following steps is a part of water cycle?

A
Evaporation

B
Precipitaion

C
Both A and B

D
Nitrification

Solution

Evaporation is the process by which water from various water bodies gets heated up to form water vapour. The water vapours travel upwards. As they move upwards, the water vapours start condensing. This process is called condensation. These water vapours convert into tiny droplets of water due to the cold temperature. Once, the droplets become heavy, they start falling on the ground in the form of rainfall, snow, etc. This process is called precipitation.
So, both evaporation and precipitation are the steps of the water cycle.
The nitrification process is part of the nitrogen cycle.
Hence, option C is correct.
Question 2
1 / -0

Choose the incorrect statement:

A
The Montreal protocol is associated with the control of the emission of ozone-depleting substances.

B
Methane and carbon dioxide are greenhouse gases.

C
Dobson unit is used to measure oxygen content.

D
Use of incinerators is crucial to disposal of hospital wastes.
Solution
Correct Option: C
Explanation:
Dobson unit is the unit of measurement for measuring the thickness of the ozone layer.
The Montreal Protocol is related to the control of emission of substances called Ozone Depleting Substances (ODS).
Greenhouse gases are gases that cause global warming. Examples include methane, carbon dioxide etc.
Incinerators help in the disposal of hospital waste by burning.
Hence, the incorrect statement is option C.
Question 3
1 / -0

Sea water is saltier than rain water because

A
the air around sea is saltish

B
Rivers wash away salts from the earth and pour them into sea

C
Sea beds have salt producing mines

D
Sea animals are salt producing
Question 4
1 / -0

Among the following, which one causes more indoor chemical pollution?

A
Burning coal

B
Burning cooking gas

C
Burning mosquito coil

D
Room spray

Solution

Among the given four options, both burning of coal and burning of mosquito coil will cause chemical pollution, but comparatively, the burning of coal will cause more pollution.
The coal leads to release of a wide array of air pollutants $$ \left( { CO }_{ x }{ SO }_{ x }{ NO }_{ x }\quad etc. \right) . $$ Among these, CO is very dangerous, as it interferes with the breathing process. People are generally advised not to sleep with coal burning in a closed room.
So, the correct answer is option A.
Question 5
1 / -0

If there was no atmosphere, the average temperature on the surface of the earth would be?

A
lower

B
higher

C
same as now

D
$${ 0 }^{ 0 }C$$

Solution

If there was no atmosphere around the earth, the temperature will decrease. Earth's atmosphere traps heat from the sun and keeps it near to the surface of the earth, popularly known as green house effect. It keeps warming the planet and sustaining life on earth. If there were no atmosphere, the average temperature drops below zero.
Thus the correct answer is option A.
Question 6
1 / -0

What will be the effect of an ozone hole?

A
Greenhouse effect

B
Global warning

C
Acid rain

D
Harmful UV rays will reach the Earth's surface, causing damage to the living organisms.

Solution

A layer of ozone around the Earth's atmosphere absorbs the harmful UV rays coming from the sun.
If there is an ozone hole or the density of ozone is less in one area, the harmful UV rays will enter the Earth's atmosphere and cause damage to living organisms. For example, exposure to harmful UV rays can cause cancer in humans.
Question 7
1 / -0

Many marine animals use carbonates dissolved in sea water to make their shells. Which of the following components is reduced in our atmosphere by this biological phenomenon?

A
Oxygen

B
Calcium carbonate

C
Carbon dioxide

D
Nitrogen

Solution

Carbonates in sea/ocean are formed when the atmospheric carbon dioxide gets dissolved with the water in sea/ocean. This carbonate is used by several marine organisms to build their calcareous shells. The major component of these calcareous shells is usually calcium carbonate. Thus, in the process of formation of calcareous shells by marine organisms, carbon dioxide (CO$$_2$$) is reduced.
So, the correct answer is option C.
Question 8
1 / -0

Which of the following measures can be taken by people to reduce air pollution?

A
Encourage your family to use the bus, train or bike when commuting

B
Rapidly accelerate the transition away from coal towards clean energy sources, like solar and wind

C
If you are buying a car, look for a fuel-efficient model

D
All of the above
Solution
People also should take initiative to reduce air pollution like
People should use public transport like bus or train for a long route and use a bicycle for a short distance.
Use a renewable source of energy like solar and wind for electricity, cooking, and water heating.
Use fuel-efficient car models for less consumption of fuel.
So, the correct answer is 'All of the above'.
Question 9
1 / -0

Low visibility in cold weather is due to which of the following pollutant/s?

A
Sulfur oxides

B
Nitrogen oxides

C
Unburnt carbon particles

D
All of the above

Solution

The combustion of fossil fuels increases the amount of suspended particles in the air. These suspended particles could be unburnt carbon particles or substances called hydrocarbons. The presence of high levels of all these pollutants lowers visibility, especially during cold weather when moisture condenses out of the air. This is known as smog and is a visible indication of air pollution.
So, the correct answer is option C.
Question 10
1 / -0

Which gas is likely to be reduced in the atmosphere by deforestation?

A
Carbon dioxide

B
Nitrogen

C
Oxygen

D
Sulphur dioxide

Solution

Photosynthesis is the main process by which oxygen is recovered in the atmosphere. If there is a reduction in plants by deforestation (clearing of forests), the levels of oxygen will deplete.
Therefore, the correct answer is option C.

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Natural Resources Test - 37

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Natural Resources Test - 37

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SHARING IS CARING

Question 1

Evaporation

Precipitaion

Both A and B

Nitrification

Solution

Question 2

The Montreal protocol is associated with the control of the emission of ozone-depleting substances.

Methane and carbon dioxide are greenhouse gases.

Dobson unit is used to measure oxygen content.

Use of incinerators is crucial to disposal of hospital wastes.

Solution

Question 3

the air around sea is saltish

Rivers wash away salts from the earth and pour them into sea

Sea beds have salt producing mines

Sea animals are salt producing

Question 4

Burning coal

Burning cooking gas

Burning mosquito coil

Room spray

Solution

Question 5

lower

higher

same as now

$${ 0 }^{ 0 }C$$

Solution

Question 6

Greenhouse effect

Global warning

Acid rain

Harmful UV rays will reach the Earth's surface, causing damage to the living organisms.

Solution

Question 7

Oxygen

Calcium carbonate

Carbon dioxide

Nitrogen

Solution

Question 8

Encourage your family to use the bus, train or bike when commuting

Rapidly accelerate the transition away from coal towards clean energy sources, like solar and wind

If you are buying a car, look for a fuel-efficient model

All of the above

Solution

Question 9

Sulfur oxides

Nitrogen oxides

Unburnt carbon particles

All of the above

Solution

Question 10

Carbon dioxide

Nitrogen

Oxygen

Sulphur dioxide

Solution

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