Capacity of parties

The parties to an agreement must be competent to contract. But the question that arises now is
that what parties are competent and what are not. The contracting parties must be of the age of majority and of sound mind and must not be disqualified by any law to which they are subject (sec.11). If any of the parties to the agreement suffers form minority, lunacy, idiocy, drunkenness etc. The agreement is not enforceable at law, except in some special cases e.g., in the case of necessaries supplied to a minor or lunatic, the supplier of goods is entitled to be reimbursed from their estate (sec 68).