where do i can do two to six month certificate course of cooking in the best institutes of india.?

Answer 1

I've never seen a certificate cooking course anywhere that was less than two years.

That said:

http://chef2chef.net/culinary-institute/country/india-culinary-schools.htm

You can start with Chef 2 Chef's list of schools. Contact the schools directly to get information on their certification programs, then decide which approaches your desired goal the closest.

Answer 2

You mean, where can you find one! Check with some big hotels in your city as they may be providing training courses for budding chefs like you! If not, ask your Mom to train you and give you a certificate!