A marriage is void under Section 11 of the Hindu Marriage Act, 1955 if:

Section 11 of the Hindu Marriage Act makes a post-Act marriage "null and void" for breach of Section 5(i), (iv) or (v), covering subsisting marriage, prohibited relationship or sapinda restrictions. Section 5(ii) defects and force or fraud fall under Section 12; age breach and non-registration do not themselves create nullity under those HMA provisions, while the Prohibition of Child Marriage Act supplies separate remedies.