Grounds For Annulment The grounds for a marriage annulment may vary according to the different legal jurisdictions, but are generally limited to fraud, bigamy, blood relationship and mental incompetence including the following: 1) Either spouse was already married to someone else at the time of the marriage in question; 2) Either spouse was too young to be married, or too young without required court or parental consent. (In some cases, such a marriage is still valid if it continues well beyond the younger spouse's reaching marriageable age); 3) Either spouse was under the influence of drugs or alcohol at the time of the marriage; 4) Either spouse was mentally incompetent at the time of the marriage; 5) If the consent to the marriage was based on fraud or force; 6) Either spouse was physically incapable to be married (typically, chronically unable to have s*xual intercourse) at the time of the marriage; 7) The marriage is prohibited by law due to the relationship between the parties. This is the "prohibited degree of consanguinity", or blood relationship between the parties. The most common legal relationship is 2nd cousins; the legality of such relationship between 1st cousins varies around the world. 8) Prisoners sentenced to a term of life imprisonment may not marry. 9) Concealment (e.g. one of the parties concealed a drug addiction, prior criminal record or having a s*xually transmitted disease)
Voidable Marriages
A voidable marriage is one where an annulment is not automatic and must be sought by one of the parties. Generally, an annulment may be sought by one of the parties to a marriage if the intent to enter into the civil contract of marriage was not present at the time of the marriage, either due to mental illness, intoxication, duress or fraud
Section 12 of Hindu Marriage Act, 1955 deals with
Voidable Marriages- (1) Any marriage solemnized, whether before or after the commencement of this Act, shall be voidable and may be annulled by a decree of nullity on any of the following grounds, namely:-
(a) that the marriage has not been consummated owing to the impotency of the respondent; or
(b) that the marriage is in contravention of the condition specified in clause (ii) of Section 5; or
(c) that the consent of the petitioner, or where the consent of the guardian in marriage of the petitioner was required under Section 5 as it stood immediately before the commencement of the Child Marriage Restraint (Amendment) Act, 1978, the consent of such guardian was obtained by force or by fraud as to the nature of the ceremony or as to any material fact or circumstance concerning the respondent; or
(d) that the respondent was at the time of the marriage pregnant by some person other than the petitioner.
go through the above section under which you can apply in the court for nullification of marriage and before that first consult a lawyer and take his advice accordingly and in which city you are from