भारतातील अणुउर्जा प्रकल्प कोणते ?
(1) कल्पक्कम
(2) नरोरा
(3) तालचेर
(4) वरीलपैकी सर्व

The correct answer is Option A (कल्पक्कम).

Key Points:
• Kalpakkam (Tamil Nadu) and Narora (Uttar Pradesh) are prominent Nuclear Power Plants in India.
• However, Talcher (Odisha) is primarily known for its Thermal Power Station and a Heavy Water Plant, but it does not have a commercial Nuclear Power Reactor generating electricity. Since the third option was technically incorrect in the context of power generation, the 'All of the above' option became invalid, leading to the question being cancelled.
• Key Takeaway: Kalpakkam and Narora are nuclear plants, whereas Talcher is famous for a thermal power plant and a heavy water plant.