UPSC Prelims 2018— Question 29

**Concept and analysis:** Delhi lies near 77° east longitude. Among the options, Bengaluru is around 77.6°E, Hyderabad around 78.5°E, Nagpur around 79.1°E and Pune around 73.9°E. Bengaluru is therefore the closest in longitude to Delhi. The question is testing precise UPSC-level identification rather than a broad association. The key is to distinguish the exact institutional, constitutional, historical, geographical, economic or scientific feature being asked. **Option-wise evaluation** **Option A:** Correct. Bengaluru directly matches the concept or factual identification established in the analysis. **Option B:** Incorrect. Hyderabad is a different institution, place, definition, proposition or description and does not satisfy the specific requirement of the question. **Option C:** Incorrect. Nagpur is a different institution, place, definition, proposition or description and does not satisfy the specific requirement of the question. **Option D:** Incorrect. Pune is a different institution, place, definition, proposition or description and does not satisfy the specific requirement of the question. **UPSC takeaway:** The safest way to solve this type of question is to anchor the answer in the defining feature of the concept and then test every option against that feature. Closely related institutions or terms are often used as distractors. In statement-based questions, do not judge the option as a whole before checking each statement independently. In factual questions, compare the wording of each option with the exact definition, location, institutional role, chronology or scientific property. The correct answer follows from that verification rather than from familiarity with a keyword.