If a minor dies during the pendency of the suit

In which of the following cases, the Supreme Court has upheld validity of adoption of boy of more than 15 years of age as per prevailing custom under Section 10(iv) of the Act-

Proviso to section 6 of the Hindu Marriage Act applies when a Hindu male dies leaving behind

If a girl becomes pregnant by some person before marriage, and subsequently maries some third person: What is the position under Hindu Marriage Act, 1955?

Give Correct Response.
Section 9 of Hindu Marriage Act was held to be Constitutional by the Hon'ble Supreme Court in: