This question has been discussed here...
http://targetiit.com/iit-jee-forum/posts/matrix-match-14143.html
...well i guess a similar question on this came in one of the BMAT test...that was a multiple option correct question...in which we were asked to find the options in which N2 gas is produced and in place of NaOCl there was Ca(OCl)2 in that question