Natural Resources Test

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Natural Resources Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following factors control(s) phenomena like windstorms, cyclones, thunderstorms, etc?

A
Difference in heating and cooling of land and water bodies

B
Uneven heating of Earth

C
Difference in topography over which the wind passes

D
All of the above

Solution

The occurrence of windstorms, cyclones, etc. depends on the differential heating of land and water. All the movements of air resulting in diverse atmospheric phenomena are caused by the uneven heating of the atmosphere in different regions of the Earth. But various other factors also influence these winds - the rotation of the Earth and the presence of mountain ranges in the paths of the wind are a couple of these factors.
Question 2
1 / -0

Which of the following statements is/are correct?

(i) Oxygen constitutes up to 95-97% of the atmosphere on Venus and Mars.
(ii) Green plants fix carbon dioxide.
(iii) Many marine animals use carbonates dissolved in seawater to breathe.

A
Only (i)

B
Only (ii)

C
Only (iii)

D
(i) and (ii)

Solution

Carbon dioxide constitutes up to 95-97% of the atmosphere on Venus and Mars. Marine animals use dissolved oxygen to breathe and not carbonates.
Question 3
1 / -0

Which of the following is the region of the atmosphere where air is subject to differential heating?

A
Exosphere

B
Stratosphere

C
Mesosphere

D
Troposphere

Solution

Troposphere forms the lowest region in the atmosphere. Every moment there is a variation in temperature, humidity and precipitation in the region of troposphere. These short term changes form weather.
Question 4
1 / -0

________ particles act as 'nucleus' to support rain drops.

A
Water

B
Snow

C
Dust

D
Air

Solution

Dust particles act as 'nucleus' to support rain drops. Normally, dust and other suspended particles in the air perform this function. Once the water droplets are formed, they grow bigger by the 'condensation' of these water droplets. When the drops have grown big and heavy, they fall down in the form of rain.
Question 5
1 / -0

What happens to the air as it rises up?

1. It expands.
2. It cools.
3. It heats up.
4. It contracts.
Choose the correct answer from the options given below.

A
1 and 2

B
4 and 3

C
3 and 4

D
1 and 3

Solution

Pressure decreases with altitude. As the hot air rises, it expands; as the pressure up there is less and so, it eventually cools.
Question 6
1 / -0

The term 'denitrification' means

A
reduction of NO₂ to ammonia by bacteria in the soil

B
conversion of ammonia to amino acids

C
conversion of nitrates to gaseous nitrogen

D
oxidation of ammonia to nitrate

Solution

The process of conversion of nitrates into nitrogen gas is called denitrification. The soil contains denitrifying bacteria called Pseudomonas. Some of the nitrates formed by the nitrification process present in the soil are converted by the denitrifying bacteria of soil into free nitrogen gas which goes back into the atmosphere and the nitrogen cycle is repeated.
Question 7
1 / -0

Which of the following is a logical sequence in carbon cycle?

A
Producer - Consumer - Decomposer

B
Decomposer - Consumer - Producer

C
Producer - Decomposer - Consumer

D
Consumer - Producer - Decomposer

Solution

The logical sequence in carbon cycle is:
Producer - Consumer - Decomposer

The carbon cycle begins by fixation of carbon by the process of photosynthesis by producers. The green plants are eaten up by animals as food. So, carbon in the form of plant carbohydrates travels as food to the animals in successive trophic levels. The CO2 produced by the respiration and decay of plants and animals is returned to the atmosphere. The micro-organisms called decomposers play an important role in this process.
Question 8
1 / -0

Excessive exposure of humans to UV rays results in

(i) damage to immune system
(ii) damage to lungs
(iii) skin cancer
(iv) peptic ulcers

A
(i) and (ii)

B
(ii) and (iv)

C
(i) and (iii)

D
(iii) and (iv)

Solution

The chronic effects of UV exposure are premature aging of the skin, suppression of the immune system, damage to the eyes and skin cancer.
Question 9
1 / -0

The shells of many aquatic animals are made up of

A
carbonates

B
nitrates

C
chlorates

D
carbides

Solution

Calcium carbonate minerals are the building blocks for the skeletons and shells of many marine/aquatic organisms.

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Re-Attempt Weekly Quiz Competition

Natural Resources Test - 2

Result

Natural Resources Test - 2

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SHARING IS CARING

Question 1

Difference in heating and cooling of land and water bodies

Uneven heating of Earth

Difference in topography over which the wind passes

All of the above

Solution

Question 2

Only (i)

Only (ii)

Only (iii)

(i) and (ii)

Solution

Question 3

Exosphere

Stratosphere

Mesosphere

Troposphere

Solution

Question 4

Water

Snow

Dust

Air

Solution

Question 5

1 and 2

4 and 3

3 and 4

1 and 3

Solution

Question 6

reduction of NO2 to ammonia by bacteria in the soil

conversion of ammonia to amino acids

conversion of nitrates to gaseous nitrogen

oxidation of ammonia to nitrate

Solution

Question 7

Producer - Consumer - Decomposer

Decomposer - Consumer - Producer

Producer - Decomposer - Consumer

Consumer - Producer - Decomposer

Solution

Question 8

(i) and (ii)

(ii) and (iv)

(i) and (iii)

(iii) and (iv)

Solution

Question 9

carbonates

nitrates

chlorates

carbides

Solution

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reduction of NO₂ to ammonia by bacteria in the soil