When did North Korea conduct the second nuclear test?
When did North Korea conduct the second nuclear test?
(A) 2006
(B) 2007
(C) 2009
(D) 2010
Correct option is (C) 2009. On May 25, 2009, North Korea carried out its second nuclear test, with the expansion estimated to be between 2 and 7 kilotons. This test mirrored the one conducted in 2006.