25. Power to grant exemption from duty.
If the Central Government is satisfied that it is necessary in the public interest so to do, it may, by notification in the Official Gazette, exempt generally either absolutely or subject to such conditions (to be fulfilled before or after clearance) as may be specified in the notification goods of any specified description from the whole or any part of duty of customs leviable thereon.
If the Central Government is satisfied that it is necessary in the public interest so to do, it may, by special order in each case, exempt from the payment of duty, under circumstances of an exceptional nature to be stated in such order, any goods on which duty is leviable.
4[ An exemption under sub- section (i) or sub- section (1) in respect of any goods from any part of the duty of customs leviable thereon (the duty of customs leviable thereon being hereinafter referred to as the statutory, duty) may be granted by providing for the levy of a duty On such goods at a rate expressed in a form or method different from the form or method in which the statutory duty is leviable and any exemption granted in relation to any goods in the manner Provided in this sub- section shall have effect subject to the condition that the duty of customs chargeable on such goods shall in no case exceed the statutory duty. Explanation.-" Form or method", in relation to a rate of duty of customs, means the basis, namely, valuation, weight, number, length, area, volume or other measure with reference to which the duty is leviable".]