Difficulty: Easy
Correct Answer: Nuclear Reactor
Explanation:
Introduction / Context:
Post-independence, India rapidly developed capabilities in atomic energy. The name “Apsara” is historically significant because it marks India’s entry into the nuclear era for research and isotopes, making it a common general knowledge and science quiz item.
Given Data / Assumptions:
Concept / Approach:
“Apsara” was India’s first nuclear research reactor, commissioned at the Bhabha Atomic Research Centre (then Atomic Energy Establishment, Trombay) in 1956. It was a swimming-pool–type reactor used for research, neutron activation, and radioisotope production. It is unrelated to locomotives, helicopters, tanks, or satellites.
Step-by-Step Solution:
Recall India’s early atomic energy milestones: Apsara (1956) as first reactor.Eliminate transport and defense items: these have different names and eras (for example, Arjun tank, Dhruv helicopter, WDM locomotives).Select the science/technology option “Nuclear Reactor.”
Verification / Alternative check:
Atomic Energy Commission records and historical retrospectives cite Apsara's commissioning and role in establishing nuclear research infrastructure in India.
Why Other Options Are Wrong:
Common Pitfalls:
Mixing up codenames across domains. Many Indian programs have evocative names; focus on the timeline and sector.
Final Answer:
Nuclear Reactor
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