Consider the following statements: 1. The Bay of Bengal branch of monsoon causes rainfall on the west coast of India. 2. The Arabian Sea current brings rain to the plains of north India. 3. The rainfall along Western Ghats is orographic. Which of the above statements is/are correct?

Category: Miscellaneous Indian Gk

Hint: Consider the geographical location and the direction of the monsoon winds.

Correct Answer: C) Only 3.

Exam Relevance: UPSC, SSC, Banking Exams

Difficulty: Moderate

Explanations:

The monsoon in India is a complex weather system that brings significant rainfall to the subcontinent. The monsoon winds are primarily influenced by the Bay of Bengal and the Arabian Sea, and their impact varies across different regions of India.

The Bay of Bengal branch of the monsoon is responsible for the rainfall on the east coast of India, particularly in states like West Bengal, Odisha, and parts of Andhra Pradesh and Tamil Nadu. This branch of the monsoon moves from the Bay of Bengal towards the east coast, bringing heavy rainfall to these regions. Therefore, the first statement that the Bay of Bengal branch causes rainfall on the west coast of India is incorrect.

The Arabian Sea branch of the monsoon, on the other hand, affects the west coast of India, including states like Kerala, Karnataka, and Goa. This branch of the monsoon moves from the Arabian Sea towards the west coast, bringing significant rainfall to these regions. The Arabian Sea branch also influences the plains of north India, particularly in states like Punjab, Haryana, and Uttar Pradesh. However, the second statement that the Arabian Sea current brings rain to the plains of north India is not entirely accurate, as it is the monsoon winds, not the current, that bring rain to these regions.

The Western Ghats, a mountain range along the west coast of India, experience orographic rainfall. Orographic rainfall occurs when moist air is forced to rise over a mountain range, causing the air to cool and condense, leading to precipitation. The Western Ghats act as a barrier to the monsoon winds, causing the air to rise and cool, resulting in heavy rainfall on the windward side of the mountains. This is why the third statement that the rainfall along the Western Ghats is orographic is correct.

In summary, the correct answer is that only the third statement is correct. The Bay of Bengal branch does not cause rainfall on the west coast, and the Arabian Sea branch, while it does bring rain to the plains of north India, is not accurately described by the second statement. The orographic effect on the Western Ghats is a well-established phenomenon in Indian geography.

Option Analysis:

Option A: Incorrect. The Bay of Bengal branch does not cause rainfall on the west coast of India; it primarily affects the east coast. The Western Ghats do experience orographic rainfall, but the first statement is incorrect.
Option B: Incorrect. The Arabian Sea branch brings rain to the west coast and the plains of north India, not the Bay of Bengal branch. The first statement is incorrect, and the second statement is partially correct but not fully accurate.
Option C: Correct. The Western Ghats experience orographic rainfall, which is caused by the windward side of the mountains. The other statements are incorrect.
Option D: Incorrect. The first and second statements are incorrect, while the third statement is correct. Therefore, not all statements are correct.

Mnemonic: Remember: "Bay to West, Sea to North, Ghats for Orographic"

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