Correct option is A
The correct answer is (a) 1998.
· India conducted its second nuclear test, known as Pokhran-II, in 1998. The tests were conducted on May 11 and 13, 1998, and were codenamed Operation Shakti.
· The tests comprised five detonations, with the first being a fusion bomb and the remaining four fission bombs.
· This event marked India's declaration as a nuclear state and led to significant international attention and subsequent sanctions by several countries.
Information Booster:
· Operation Smiling Buddha was the assigned code name of India’s first successful nuclear bomb test on 18 May 1974. The bomb was detonated on the army base Pokhran Test Range, in Rajasthan, by the Indian Army under the supervision of several key Indian generals. As per the United States military intelligence, the operation was named as Happy Krishna.