PDE Q53

During winter, the Great Himalayas act as a barrier and prevent the cold polar winds from entering northern India. This natural wall blocks the icy winds from Central Asia, keeping much of India, especially the northern plains, warmer than other regions at the same latitude.

• Option A: India is essentially a tropical country
  Incorrect. This is true in general but does not explain the specific winter temperature difference.

• Option B: The surface wind blows in a particular direction in one season
  Incorrect. Seasonal winds do affect climate, but this is not the main reason for warmer winters in northern India.

• Option C: The Great Himalayas check the penetration of cold polar air into India effectively
  Correct. The Himalayas act as a climatic divide and shield the subcontinent from cold northern winds.

• Option D: Of winter rains
  Incorrect. Winter rains are limited and do not significantly influence overall warmth.