Section 11(1) in The Central Goods and Services Tax Act, 2017
(1)Where the Government is satisfied that it is necessary in the public interest so to do, it may, on the recommendations of the Council, by notification, exempt generally, either absolutely or subject to such conditions as may be specified therein, goods or services or both of any specified description from the whole or any part of the tax leviable thereon with effect from such date as may be specified in such notification.