Question

Assertion :The monsoonal rainfall decreases as one goes towards the west and northwest in the Ganga plain. Reason: The moisture-bearing monsoonal winds go higher up as one moves up in the Ganga plain.

• A. Both A and R are true but R is the correct explanation of A
• B. Both A and R are true but R is not a correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is C A is true but R is false

The rainfall decreases from east to west in northern India because of the following reason:

The inflow of the south-west monsoon into India is such that the windward side of the Western Ghats receives very heavy rainfall, more than 250 cm. The rain shadow region receives scanty rainfall and the moisture-laden clouds shed the maximum rainfall of this season in the north-eastern part of the country. Thus, Mawsynram in the southern ranges of the Khasi Hills receives the highest average rainfall in the world. Rainfall in the Ganga valley decreases from the east to the west. Hence, Rajasthan and parts of Gujarat which are on the western get scanty rainfall.

So, the correct answer is 'A is true but R is false'.