Hello,
You do need a domicile certificate, fir participate in the Councelling process of any examination.
the documentation process during ongoing counselling rounds, certain documents are required necessarily and if you want to take the reservation on basis of your domicile state then alone 10+2 certificates will not work, you must require domicile certificates also, to become eligible for taking benefit of your domicile state.
Hope this information will help.
Good luck!

Dear Aspirant,

If you are a resident of West Bengal then you must have a domicile certificate. Most of the colleges in India asks for Domicile and according to the condition you have explained, you must have to produce the domicile certificate. 

10+2 does work but in 90% of the cases you'll be needing a domicile, so if you do not have domicile then I suggest you must get yourself one as the counseling period has started.

Hope this helps.

Thanks.

Hello aspirant, even if you are a resident of West Bengal and passed 10+2 in from West Bengal, you still need a domicile certificate. The 10+2 certificate will not do the work. Though 10+2 certificate is also required during the councelling process and verification. Domicile certificate is must. 

Hope this answer gives you the information you required.