Hello. Hope you are doing well

Your state of eligibility is West Bengal hence your home state quota will be applicable in colleges of West Bengal only.

You mentioned that your obc ncl certificate is from Jharkhand which won't decide your eligibility state anyway. So no matter which college you take admission, your obc ncl will be valid.

Hence, to answer your question, yes, you will be able to enjoy dual benefit of home state quota and obc reservation in NIT Durgapur.