Consider the following statements: The South-West Monsoon originates in India due to 1. low pressure in the Punjab plain 2. high pressure in areas South of India 3. equatorial low being filled up by descending air current 4. the Himalayas Which of the sta

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Q: 94 (CDS-II/2007)
Consider the following statements: The South-West Monsoon originates in India due to
1. low pressure in the Punjab plain
2. high pressure in areas South of India
3. equatorial low being filled up by descending air current
4. the Himalayas
Which of the statements given above are correct?

question_subject: 

Geography

question_exam: 

CDS-II

stats: 

0,5,28,13,7,5,8

keywords: 

{'west monsoon originates': [0, 0, 2, 0], 'himalayas': [5, 0, 3, 4], 'punjab': [2, 0, 1, 0], 'india': [8, 1, 7, 13], 'low pressure': [1, 1, 7, 8], 'areas south': [0, 0, 2, 0], 'south': [15, 1, 23, 37], 'high pressure': [1, 0, 8, 4], 'air current': [0, 0, 2, 0]}

The correct answer to the question is option 3: 1 and 3.

Statement 1 is correct because the South-West Monsoon originates from low pressure in the Punjab plain. During the summer, the land in the Punjab plain heats up, creating a low-pressure area which attracts moist air from the Indian Ocean, leading to the monsoon rains.

Statement 2 is incorrect. High pressure in areas south of India does not play a significant role in the origin of the South-West Monsoon.

Statement 3 is correct. The South-West Monsoon originates from the equatorial low being filled up by descending air currents. The equatorial low-pressure area is formed due to intense heating of the air near the equator, which causes the air to rise and create a low-pressure zone. As this air rises, it cools, expands, and moves towards the poles. Some of this air descends around 30°N latitude and fills up the equatorial low-pressure area, triggering the monsoon winds.

Statement 4 is incorrect. The Himalayas do not play a direct role in the origin of the South-West Monsoon. However, they do play a crucial role in modifying the monsoon winds as they act as a barrier, causing the air to rise,