Which Indian climate term is correctly associated with classification or identity “a violent pre-monsoon thunderstorm also called a nor'wester”, and also with “it is especially associated with West Bengal and adjoining eastern India”?

Correct Answer: Option A — Kal Baisakhi. Kal Baisakhi is correctly identified as a violent pre-monsoon thunderstorm also called a nor'wester. Kal Baisakhi is also associated with it is especially associated with West Bengal and adjoining eastern India. Another identifying fact about Kal Baisakhi is that strong squalls, lightning and short heavy rain are common features. A further exam-relevant fact about Kal Baisakhi is that the storms can benefit some crops while also causing local damage. Why the other options are incorrect: • Option B — El Nino: El Nino is the warm phase of the El Nino-Southern Oscillation. It is incorrect here because El Nino is instead associated with it involves unusual warming in the central and eastern equatorial Pacific. • Option C — La Nina: La Nina is the cool phase of the El Nino-Southern Oscillation. It is incorrect here because La Nina is instead associated with it involves unusual cooling in the central and eastern equatorial Pacific. • Option D — Southwest Monsoon: Southwest Monsoon is the principal rain-bearing seasonal wind system of India. It is incorrect here because Southwest Monsoon is instead associated with it reaches India from the Arabian Sea and Bay of Bengal sectors. Exam Takeaway: Connect Kal Baisakhi with “a violent pre-monsoon thunderstorm also called a nor'wester” and “it is especially associated with West Bengal and adjoining eastern India” for revision.