Natural Resources Test

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Natural Resources Test - 22

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Weekly Quiz Competition

Question 1
1 / -0

The correct match for atmospheric gases is

A
Nitrogen- 0.03%, Oxygen- 20.95%, Argon- 0.93% and Carbon dioxide-78.08%

B
Nitrogen- 78.08%, Oxygen- 20.95%, Argon- 0.93% and Carbon dioxide- 20.02%

C
Nitrogen- 0.03%, Oxygen- 0.03%, Argon- 20.95% and Carbon dioxide- 1.02%

D
Nitrogen- 78.08%, Oxygen- 20.95%, Argon- 0.93% and Carbon dioxide- 0.03%

Solution

By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.
So, the correct answer is option D.
Question 2
1 / -0

The fresh water is continually being renewed and recharged through

A
Hydrological cycle

B
Carbon cycle

C
Nitrogen cycle

D
Life cycle

Solution

The hydrological cycle is a prominent method to rejuvenate the fresh water resources. It involves the evaporation of water into water vapour by the heat of the sun which further condenses into tiny water droplets which fall on the earth as rain. This continuous recycling of water leads to recharging of the water resources.
Question 3
1 / -0

Carbon is available to crop plants in the form of

A
Amino acids

B
Carbon dioxide

C
Elemental carbon

D
Carbonates

Solution

Plants intake carbon in the form of carbon dioxide from the atmosphere or dissolved in water. This carbon dioxide is used by plants to prepare food by the process of photosynthesis.
The correct option is B.
Question 4
1 / -0

Ozone hole is ________.

A
Hole of ozone layers

B
Same concentration of ozone

C
Thining of ozone in stratosphere

D
Increase of ozone in antartic region
Solution
- An ozone hole is a depletion of the ozone layer which is present in the stratosphere region around 26-30kms above the Earth's surface.
- It is caused by chlorofluorocarbons (CFCs) found in air-conditioners, aerosol spray cans, refrigerants, etc.
- CFCs can not be removed in the troposphere and moves in the stratosphere layer where it reacts with ozone, thereby releasing free chlorine atoms and causes the ozone layer to deplete.
Hence, the correct answer is option C.
Question 5
1 / -0

Which of the following prevents soil erosion?

A
Animals

B
Rocks

C
Plants

D
Mountains

Solution

Plants prevents soil erosion as their roots firmly bind the soil. In the absence of plants, soil becomes loose so it can be moved by wind and flowing water.
So, the correct answer is option C.
Question 6
1 / -0

Which of the following convert the dead plants and animals to humus?

A
Chemicals

B
Scavengers

C
Decomposers

D
Consumers

Solution

Decomposers are the microorganisms that act on dead living organisms and break down complex substances into simples inorganic substances.
Thus, the correct option is C.
Question 7
1 / -0

Weather is predicted by considering ______.

A
Movement of air

B
Amount of water vapour

C
Temperature

D
All the above
Solution
- Accurate weather prediction can be made only if all the air measurements i.e. temperature, humidity, and wind direction are considered.
- Moving air is known as the wind which is caused by differences in air pressure. It is the air that moves from an area of high pressure to an area of low pressure and causes day-to-day changes in weather. Thus the wind brings in different air masses and different weather patterns. The greater the difference in air pressure, the greater is the wind speed.
- The amount of water vapour present in the atmosphere is known as humidity. The measure of the water vapour present in the atmosphere as compared to vapour content at saturation levels is known as relative humidity. The formation of clouds and rain occurs only at 100% relative humidity and not near the surface. The rising and cooling air forms clouds and increases humidity. The fall of precipitation from the clouds occurs into layers with lower humidity.
- The measure of air's hotness and coldness is known as temperature. Temperature affects the type of precipitation that can form. If the atmospheric conditions are such that precipitation can occur and the temperature is above freezing then rain occurs. If the temperature is below freezing then, snow formation occurs.
Thus, the correct answer is option D.
Question 8
1 / -0

Which of the following is not a greenhouse gas?

A
$$CH_4 $$

B
$$N_2O$$

C
Water vapor

D
$$CO_2$$

E
None of the above
Solution
- A greenhouse gas is any gaseous compound in the atmosphere that is capable of absorbing infrared radiation, thereby trapping and holding heat in the atmosphere.
- By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect.
- The most significant greenhouse gases are water vapor ($$H_2O$$), carbon dioxide ($$CO_2$$), methane ($$CH_4$$) and nitrous oxide ($$N_2O$$).
So, the correct answer is option E.
Question 9
1 / -0

The rotting dead matter in the soil is called:

A
Decomposition

B
Humus

C
Petrification

D
Minerals

Solution

The dark black upper layer of the soil is known as humus. It is the dead remains of plants and animals that have been decomposed by bacteria and fungi. This humus-rich soil increases the aeration capacity of soil and also helps in the penetration of roots of plants. The decomposition of organic matter helps in bringing the plant and animal residues back to the soil.
So, the correct answer is option B.
Question 10
1 / -0

............... helps in maintaining the supply of nutrients to the growing plants.

A
Herbivores

B
Carnivores

C
Decomposers

D
Omnivores

Solution

All living organisms have a definite life cycle.
When an organism dies, his dead body is decayed by numerous saprophytes feeding over it. These saprophytes convert complex organic material into simple inorganic material which is then stored in the soil in the form of nutrients. When seeds of a plant grow, they receive nutrition from the soil which is absorbed by the roots of the plants.
In this way, decomposers that decay plant and animal bodies provide the nutrition back to the soil
So, option C, 'Decomposers' is the correct option.

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Natural Resources Test - 22

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Natural Resources Test - 22

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SHARING IS CARING

Question 1

Nitrogen- 0.03%, Oxygen- 20.95%, Argon- 0.93% and Carbon dioxide-78.08%

Nitrogen- 78.08%, Oxygen- 20.95%, Argon- 0.93% and Carbon dioxide- 20.02%

Nitrogen- 0.03%, Oxygen- 0.03%, Argon- 20.95% and Carbon dioxide- 1.02%

Nitrogen- 78.08%, Oxygen- 20.95%, Argon- 0.93% and Carbon dioxide- 0.03%

Solution

Question 2

Hydrological cycle

Carbon cycle

Nitrogen cycle

Life cycle

Solution

Question 3

Amino acids

Carbon dioxide

Elemental carbon

Carbonates

Solution

Question 4

Hole of ozone layers

Same concentration of ozone

Thining of ozone in stratosphere

Increase of ozone in antartic region

Solution

Question 5

Animals

Rocks

Plants

Mountains

Solution

Question 6

Chemicals

Scavengers

Decomposers

Consumers

Solution

Question 7

Movement of air

Amount of water vapour

Temperature

All the above

Solution

Question 8

$$CH_4 $$

$$N_2O$$

Water vapor

$$CO_2$$

None of the above

Solution

Question 9

Decomposition

Humus

Petrification

Minerals

Solution

Question 10

Herbivores

Carnivores

Decomposers

Omnivores

Solution

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