Not a good idea. Better solution would be to convince the browsers to include no?

Note: thejeshgn.com/2014/07/11/ind…

Viewers of @NCIIPC web portal are getting security error in certain browsers due to unrecognized root certificate of Root Certifying Authority of India
(#RCAI). Follow user manual for installation of required root certificate to avoid such warning https://t.co/LWGv5ZFttG pic.twitter.com/UCyx0crkuS

— NCIIPC India (@NCIIPC) April 27, 2018