Multiple choice general knowledge "Operation Smiling Buddha" on nuclear power occured in.............. 1974 1998 1966 1971 Reveal answer Fill a bubble to check yourself A Correct answer Explanation Operation Smiling Buddha (also known as Pokhran-I) was India's first successful nuclear test, conducted on 18 May 1974 at Pokhran, Rajasthan. This was a peaceful nuclear explosion test. Option A (1974) is correct.