I want to know about nullity of marriage

Yes, under Indian law, a marriage done by force or blackmail can be declared null and void.
As per Section 12(1)(c) of the Hindu Marriage Act, 1955, if consent was obtained by force or fraud, the marriage is voidable.
The affected person can file a petition for annulment in the Family Court.
This must be done within one year of discovering the fraud or after the force has ceased.
Evidence like threats, messages, or witness statements will strengthen the case.
If proven, the court may legally cancel the marriage through a decree of nullity.

A marriage can be annulled if the consent of either party was obtained by force or fraud.

This includes not just physical force, but also mental pressure, threats, or undue influence that compels a person to marry against their will. A petition for nullity on these grounds must typically be filed within one year of the marriage or when the force/blackmail ceased. The person seeking nullity must provide evidence of the force or blackmail used to compel the marriage.

If the family court grants nullity, the marriage is considered void from the beginning (as if it never happened).

As there are time limitations for filing such petitions. Remember, forced marriage is a violation of human rights in India, and there are legal protections in place for victims.

If you are above 18 years it cannot be consider.