UPSC Prelims 2015— Question 80

Correct answer: Option B. The passage describes a daily cycle of strong convection: clear morning, heating during the day, cloud formation and short-duration thunderstorm rain. This is characteristic of equatorial climates, where intense solar heating and high moisture support frequent convectional rainfall, often with a pronounced afternoon maximum. Option-wise analysis: Option A: “Savannah” is incorrect. It does not match the specific fact, definition, institutional role, geographical association, or constitutional/economic principle required here. The key distinction is the one identified in the core explanation, so this option can be eliminated. Option B: “Equatorial” is correct. It directly matches the factual or conceptual requirement tested by the question and is supported by the principle explained above. Option C: “Monsoon” is incorrect. It does not match the specific fact, definition, institutional role, geographical association, or constitutional/economic principle required here. The key distinction is the one identified in the core explanation, so this option can be eliminated. Option D: “Mediterranean” is incorrect. It does not match the specific fact, definition, institutional role, geographical association, or constitutional/economic principle required here. The key distinction is the one identified in the core explanation, so this option can be eliminated. Prelims takeaway: Focus on the precise institutional role, constitutional provision, geographical association, or technical definition being tested. UPSC questions often place a broadly familiar fact beside a narrowly incorrect qualifier; identifying that qualifier is essential for elimination.