It is a cyclonic wind.
They bring rainfall about 10 cm in Bihar plain.
They are useful for crops like mango, litchi, rice and jute.
They are hot winds blowing from West.
Answer is Wrong!
Answer is Right!
The correct answer is D. Norwesters are cold winds blowing from the north-west. They are not hot winds.
Norwesters are a type of wind that blows in the Indian subcontinent during the winter months. They are caused by the difference in pressure between the cold air mass over the Himalayas and the warm air mass over the plains. The norwesters bring heavy rainfall to the Bihar plain and are useful for crops like mango, litchi, rice and jute.
Here is a brief explanation of each option:
- Option A: Norwesters are not cyclonic winds. They are caused by the difference in pressure between the cold air mass over the Himalayas and the warm air mass over the plains.
- Option B: Norwesters do bring rainfall about 10 cm in Bihar plain. This rainfall is useful for crops like mango, litchi, rice and jute.
- Option C: Norwesters are useful for crops like mango, litchi, rice and jute. The rainfall they bring is beneficial for these crops.
- Option D: Norwesters are cold winds blowing from the north-west. They are not hot winds.