Assertion (A) : ‘Western Disturbances’ disturb the calm and quite wea...
They disturb the calm and quiet weather of north and north western India by causing cyclonic rains over the plains and snowfall in the mountains.
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Assertion (A) : ‘Western Disturbances’ disturb the calm and quite wea...
Assertion (A) : ‘Western Disturbances’ disturb the calm and quite weather of North and North– western India by causing cyclonic rains over the plains and snowfall in the mountains.
Reason (R) : Winter rainfall caused by them locally known as ‘Mahawat’ is of immense importance for the cultivation of Rabi crops.
The correct answer is option 'B'. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Explanation:
Western Disturbances:
- Western Disturbances are a type of extra-tropical storm system that originates in the Mediterranean region.
- These disturbances move from west to east and affect the weather conditions in North India.
- They are responsible for bringing winter rainfall to the region, particularly in the states of Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Punjab, Haryana, and Rajasthan.
- These disturbances are associated with the westerly jet streams in the upper troposphere.
Effect on Weather:
- Western Disturbances disturb the calm and quiet weather of North and North-western India.
- They bring cyclonic rains over the plains and snowfall in the mountains.
- These rains and snowfall are important for the agricultural activities in the region.
- The winter rainfall caused by Western Disturbances is locally known as ‘Mahawat’.
- This rainfall is of immense importance for the cultivation of Rabi crops.
Explanation of Assertion (A):
- The assertion states that Western Disturbances disturb the calm and quiet weather of North and North-western India by causing cyclonic rains over the plains and snowfall in the mountains.
- This is true as Western Disturbances are known to bring rainfall and snowfall to the region, disrupting the normal weather conditions.
Explanation of Reason (R):
- The reason states that the winter rainfall caused by Western Disturbances, locally known as ‘Mahawat’, is of immense importance for the cultivation of Rabi crops.
- This is also true as Rabi crops are sown in winter and depend on the availability of water for their growth.
- The winter rainfall brought by Western Disturbances provides the necessary water for the cultivation of Rabi crops.
Conclusion:
- Both the assertion and the reason are true.
- However, the reason does not provide a correct explanation for the assertion.
- The disturbance caused by Western Disturbances and the importance of winter rainfall for Rabi crops are two separate facts that are both true but not causally related.
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