What was the minimum marriageable age fixed under Sharda Act for boys and girls?

The Native Marriage Act of 1872 had sought to curb the practice of child marriage by placing the minimum age of girls at:

In which year “The Hindu Widow Remarriage Act’ was passed?

Under which act, a Supreme Court was established at Calcutta?

The Tenure of the Congress ministries formed in the elections of 1937 after the Act of 1935 was:

The system under which the peasant himself owns the land and is responsible for payment of land revenue to the Government is known as