Multiple choice general knowledge ' Apsara ' is what ? A Nuclear Power Reactor A Helicopter A Sattelite A Submarine Reveal answer Fill a bubble to check yourself A Correct answer Explanation Apsara was India's first nuclear reactor, commissioned in 1956 at the Bhabha Atomic Research Centre (BARC) in Mumbai. It was Asia's first nuclear reactor to go critical and marked the beginning of India's nuclear energy program.