A child can be adopted if s/he is:
An orphan, abandoned or surrendered (OAS) child who has been declared legally free for adoption by the Child Welfare Committee (CWC)
(As per the provisions of the JJ (C&PC) Act 2015 and the corresponding rules)
A child of a relative (a relative means the child’s paternal uncle or aunt, a maternal uncle or aunt or paternal and maternal grandparents)
A child or children of a spouse from earlier marriage surrendered by the biological parent(s) for adoption by the step-parent.
(Section 38 and 56 of the JJ (C&PC) Act, 2015 and Regulation 4 of Adoption Regulations)