Multiple choice general knowledge sports When was the second nuclear test had been conducted ? 13th May1996 13th May 1998 15th April 2003 11th and 13th May 1998 Reveal answer Fill a bubble to check yourself D Correct answer Explanation India's second nuclear test series, Operation Shakti, was conducted on 11th May 1998 (three tests) and 13th May 1998 (two tests). The tests were spread across two days, totaling five nuclear devices.