Explanation:

The Delimitation Commission is appointed by the President of India and works in collaboration with the Election Commission of India.

• The Delimitation Commission in India is a high power body whose orders have the force of law and cannot be called in question before any court.

Composition

• Retired Supreme Court judge
• Chief Election Commissioner
• Respective State Election Commissioners

Delimitation Commissions So Far: Delimitation Commissions have been set up four times — 1952, 1963, 1973 and 2002 under the Acts of 1952, 1962, 1972 and 2002.

• The first delimitation exercise was carried out by the President (with the help of the Election Commission) in 1950-51.
• There was no delimitation after the 1981 and 1991 Census.

Hence only statement 1st is correct.