The correct answer is:
A — The Gravitational force of the Earth
Earth’s gravity holds the gases of the atmosphere close to its surface, preventing them from drifting off into space.
People, Development and Environment MCQ - People, Development and Environment Section 1
12
The zone of excessively dry climate with very cold temperature throughout the year correspond to:
The correct answer is:
D — Antarctica
Antarctica is a polar desert with an extremely cold and dry climate throughout the year.
The correct answer is:
C — leaching
Laterite soil develops due to intense leaching, a process where heavy rainfall washes away soluble nutrients from the upper layers of the soil, leaving behind iron and aluminum-rich residues. This happens mainly in tropical regions with high temperatures and heavy rainfall.
The correct answer is:
C — Bhagirathi
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A. Sutlej — Tributary of the Indus, flows from Tibet into Pakistan.
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B. Jhelum — Tributary of the Indus, originates in Jammu & Kashmir.
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C. Bhagirathi — Not a tributary of the Indus; it is a headstream of the Ganga in Uttarakhand.
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D. Chenab — Tributary of the Indus, formed in Himachal Pradesh.
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A. Gravitational pull of the moon on the earth's surface including sea water
→ Partly correct, as the moon is the main cause of tides, but it ignores the sun’s role. -
B. Gravitational pull of the sun on the earth's surface only and not on the sea water
→ Incorrect, because the sun affects sea water too, and tides involve the oceans, not just land. -
C. Gravitational pull of the moon and the sun on the earth's surface including the sea water
→ Correct, as both the moon and sun’s gravity influence tides in the oceans. -
D. None of these
→ Incorrect, because option C is the correct explanation.
So, C is correct.
