1) The Goan Civil Code governs the law relating to marriages, succession, and so on in Goa and is only applicable to citizens of Goa. Goan citizenship as per the Civil Code, is acquired either by birth in Goa, or by virtue of one’s father or grandfather being born in Goa. It can also be acquired by virtue of marriage, in the case of a woman, or by naturalization.
2) you would be governed by provisions of HMA