World Geography
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Question 1 of 5
1. Question
2 pointsConsider the following statements regarding Fold Mountains:
1. The Fold Mountains are often called as mountains of accumulation.
2. The overriding portion of the thrust fold is termed as nappe.
Which of the statements given above is/are correct?
Correct
ANSWER: B
Explanation:
- The Fold Mountains are often called as mountains of elevation, volcanic mountains are known as mountains of accumulation. Hence the first statement is incorrect. The overriding portion of the thrust fold is termed as nappe.
Incorrect
ANSWER: B
Explanation:
- The Fold Mountains are often called as mountains of elevation, volcanic mountains are known as mountains of accumulation. Hence the first statement is incorrect. The overriding portion of the thrust fold is termed as nappe.
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Question 2 of 5
2. Question
2 pointsWhich of the following methods are used to clean-up and recover from an oil-spill?
1. Bioremediation
2. Controlled Burning
3. Dispersants
4. Dredging
Select the correct answer using the code given below.
Correct
ANSWER: A
Explanation:
- All are used.
- Dispersants are chemicals that are sprayed on a surface oil slick to break down the oil into smaller droplets that more readily mix with the water.
Dispersants do not reduce the amount of oil entering the environment, but push the effects of the spill underwater; Dredging is the removal of sediments and debris from the bottom of lakes, rivers, harbours, and other water bodies. It is a routine necessity in waterways around the world because sedimentation—the natural process of sand and silt washing downstream—gradually fills channels and harbours; Bioremediation is a waste management technique that involves the use of organisms to remove or neutralize pollutants from a contaminated site; bioremediation is a “treatment that uses naturally occurring organisms to break down hazardous substances into less toxic or non-toxic substances.
Incorrect
ANSWER: A
Explanation:
- All are used.
- Dispersants are chemicals that are sprayed on a surface oil slick to break down the oil into smaller droplets that more readily mix with the water.
Dispersants do not reduce the amount of oil entering the environment, but push the effects of the spill underwater; Dredging is the removal of sediments and debris from the bottom of lakes, rivers, harbours, and other water bodies. It is a routine necessity in waterways around the world because sedimentation—the natural process of sand and silt washing downstream—gradually fills channels and harbours; Bioremediation is a waste management technique that involves the use of organisms to remove or neutralize pollutants from a contaminated site; bioremediation is a “treatment that uses naturally occurring organisms to break down hazardous substances into less toxic or non-toxic substances.
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Question 3 of 5
3. Question
2 pointsConsider the following statements:
1. There are no clouds in the stratosphere and mesosphere.
2. The halo of the sun is due to cumulostratus clouds.
3. Middle altitude clouds are known as Alto clouds.
Select the correct answer using the codes given below:
Correct
ANSWER: B
Explanation:
- Although the mesosphere is devoid of clouds, there are some cirrus clouds in the lower layers of stratosphere hence the first statement is incorrect.
- The halo of the sun is due to the cirrus clouds at very high altitude hence the second statement is also incorrect.
- The mid-altitude clouds between 2-6 km from the ground level are known as Alto clouds. Eg. Altostratus. Hence, the third statement is correct.
Incorrect
ANSWER: B
Explanation:
- Although the mesosphere is devoid of clouds, there are some cirrus clouds in the lower layers of stratosphere hence the first statement is incorrect.
- The halo of the sun is due to the cirrus clouds at very high altitude hence the second statement is also incorrect.
- The mid-altitude clouds between 2-6 km from the ground level are known as Alto clouds. Eg. Altostratus. Hence, the third statement is correct.
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Question 4 of 5
4. Question
2 pointsWhat is ‘Aurora’ a phenomenon observed over high latitudes?
Correct
ANSWER: A
Explanation:
The magnetosphere is ionized and excited by the disturbance of solar winds. It is observed near the poles.
Incorrect
ANSWER: A
Explanation:
The magnetosphere is ionized and excited by the disturbance of solar winds. It is observed near the poles.
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Question 5 of 5
5. Question
2 pointsWhich of the following can be associated with the youthful stage of a river?
1. Waterfalls
2. V-shaped valleys
3. L-shaped valleys
4. Rapids
Select the correct answer using the codes given below.
Correct
ANSWER: D
Explanation:
Waterfalls, V-shaped valleys, I-shaped valleys, Rapids are typically associated with the juvenile stage of a river when valley deepening exceeds lateral (sideways) erosion.
Incorrect
ANSWER: D
Explanation:
Waterfalls, V-shaped valleys, I-shaped valleys, Rapids are typically associated with the juvenile stage of a river when valley deepening exceeds lateral (sideways) erosion.
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