Which Indian climate term is correctly associated with important geographical fact “depressions moving along it can produce widespread rain”, and also with “an elongated low-pressure zone across northern India during the summer monsoon”?

Correct Answer: Option D — Monsoon Trough. Monsoon Trough is correctly identified as depressions moving along it can produce widespread rain. Monsoon Trough is also associated with an elongated low-pressure zone across northern India during the summer monsoon. Another identifying fact about Monsoon Trough is that its north-south shifts change the distribution of monsoon rainfall. A further exam-relevant fact about Monsoon Trough is that depressions moving along it can produce widespread rain. Why the other options are incorrect: • Option A — Western Disturbance: Western Disturbance is its precipitation can benefit the winter rabi crop. It is incorrect here because Western Disturbance is instead associated with an eastward-moving extratropical weather system. • Option B — Loo: Loo is prolonged exposure can cause heat illness and dehydration. It is incorrect here because Loo is instead associated with a very hot and dry local wind of the pre-monsoon summer. • Option C — Mango Showers: Mango Showers is they may also support pre-monsoon plantation-crop conditions. It is incorrect here because Mango Showers is instead associated with pre-monsoon convectional showers of southern India. Exam Takeaway: Connect Monsoon Trough with “depressions moving along it can produce widespread rain” and “an elongated low-pressure zone across northern India during the summer monsoon” for revision.