Q. With reference to the impact of Himalayas on Indian climate, which of the following statements is/are correct?
1. They act as an effective physical barrier for rain bearing south-west monsoon winds.
2. They protect India from cold and dry air masses of Central Asia.
Select the correct answer using the codes given below:

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

The Himalayas act as a climatic divide between India and Central Asia. 

  • During winter, Himalayas protect India from cold and dry air masses of Central Asia. 
  • During monsoon months these mountain ranges act as an effective physical barrier for rain bearing south-west monsoon winds. 
  • Himalayas divide the Bay of Bengal branch of monsoon winds into two branches – one branch flowing along the plain regions towards north-west India and the other towards South-East Asia. 
  • If the Himalayas were not present, the monsoon winds would simply move into China and most of the north India would have been a desert. 

Source: NCERT – India Physical Environment