JUDGMENT

BHAGWATI, C.J.I. :— The short question that arises for determination in this appeal by certificate is whether shrimps, prawns and lobsters subjected to processing like cutting of heads and tails, peeling, deveining, cleaning and freezing cease to be the same commodity and become a different commodity for the purpose of the Central Sales Tax Act, 1956. Can they still go under the description of shrimps, prawns and lobsters or in other words, when we use the words shrimps, prawns and lobsters do they mean only raw shrimps, prawns and lobsters as caught from the sea or do they also include processed and frozen shrimps, prawns and lobsters? This question which falls for determination in the present appeal arises out of the following facts.

2. The appellants are a partnership firm carrying on business as dealers in shrimps, prawns and lobsters and other sea food products. The appellants are registered as a dealer both under the Karnataka Sales Tax Act 1957 and the Central Sales Tax Act 1956. The appellants in the course of their business purchase shrimps, prawns and lobsters locally for the purpose of complying with orders for export and they cut the heads and tails of the shrimps, prawns and lobsters purchased by them, peel, devein and clean them and after freezing and packing them in cartons, they export them to foreign buyers outside India under prior contracts of sale. The appellants filed their statement of monthly turn-over for the month of April 1982 before the Assistant Commissioner of Commercial Taxes, Mangalore and in this statement of monthly turn-over, they claimed total exemption from tax in respect of the purchase turn-over of shrimps, prawns and lobsters on the ground that the same had been purchased in the course of export. The appellants relied on sub-sec. (3) of S. 5 of the Central Sales Tax Act 1956 which reads as follows :

"Notwithstanding anything contained in subsection (1) the last sale or purchase of any goods preceding the sale or purchase occasioning the export of those goods out of the territory of India shall also be deemed to be in the course of such export, if such last sale or purchase took place after, and was for the purpose of complying with, the agreement or order for or in relation to such export."

The appellants contended that since the purchases of shrimps, prawns and lobsters had been made by them for the purpose of complying with the orders for export, such purchases of shrimps, prawns and lobsters must be deemed to be in the course of export and they were accordingly not taxable under the Karnataka Sales Tax Act 1957. This contention of the appellants was rejected by the Assistant Commissioner of Commercial Taxes and on 30th July 1982 an order was made by the Assistant Commissioner of Commercial Taxes for the month of April 1982 under S. 12B(2) of the Karnataka Sales Tax Act 1957 assessing the appellants to purchase-tax and other incidental taxes in respect of the purchases of shrimps, prawns and lobsters made by them during the said period. The Assistant Commissioner of Commercial Taxes also passed another order dt. 3rd August 1982 assessing the appellants to purchase-tax and other incidental taxes in respect of the purchases of shrimps, prawns and lobsters made by them during the month of May, 1982. These two orders made by the Assistant Commissioner of Commercial Taxes were followed by issue of notices of demand for Rs. 52,610.71 and Rs. 44,237.88 respectively against the appellants. The appellants thereupon filed a writ petition in the High Court of Karnataka challenging the assessment orders and the notices of demand issued against them and sought appropriate direction, order or writ restraining the respondents from imposing or collecting purchase-tax on purchase turn-over of shrimps, prawns and lobsters under the Karnataka Sales Tax Act 1957. The writ petition was dismissed by the High Court, but having regard to the importance of the question involved, a certificate under Art. 1