What is the major reason for very high rainfall in the Khasi Hills?
Answer and explanation
Correct answer: They force moist monsoon winds to rise
The governing concept is orographic rainfall, in which moist air is forced to rise over a highland barrier. During the monsoon, moisture-laden winds from the Bay of Bengal move toward the northeastern hills. The Khasi Hills make these winds ascend; rising air cools, condenses and produces very heavy rainfall on the windward slopes. Therefore option B is correct. The hills are not in the Thar Desert, are not the highest Himalayan range, and their soil composition does not create monsoon rainfall. The explanation depends on wind direction, relief and condensation, not on soil or snow.
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What is the correct answer to this question?
They force moist monsoon winds to rise
Why is this the correct answer?
The governing concept is orographic rainfall, in which moist air is forced to rise over a highland barrier. During the monsoon, moisture-laden winds from the Bay of Bengal move toward the northeastern hills. The Khasi Hills make these winds ascend; rising air cools, condenses and produces very heavy rainfall on the windward slopes. Therefore option B is correct. The hills are not in the Thar Desert, are not the highest Himalayan range, and their soil composition does not create monsoon rainfall. The explanation depends on wind direction, relief and condensation, not on soil or snow.
Which subject and chapter does this question cover?
This is a Class 10 General Knowledge question. Chapter: Indian Geography. Topic: Mountains and Plateaus of India.
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