(1) For the purposes of explanation 1 under clause (b) of sub-section (1) of section 10 of the Act, the following shall be the Oil Companies, namely:-
(i) Oil India Limited;
(ii) Oil and Natural Gas Corporation Limited;
(iii) Gas Authority of India Limited;
(iv) Indian Oil Corporation Limited;
(v) Bharat Petroleum Corporation Limited;
(vi) Hindusthan Petroleum Corporation Limited;
(vii) Bongaigaon Refinery and Petro-Chemicals Limited;
(viii) Indian Oil Corporation-Assam Oil Division;
(ix) Indo-Burma Petroleum Company (IBP Co. Ltd.);
(x) Numaligarh Refinery Limited;
(xi) Assam Gas Company Limited;
(xii) Reliance Industries Limited; and
(xiii) Nayara Energy Limited.
(2) The Purchasing Oil Company shall furnish a declaration in Form-1 to the Selling Oil Company declaring, inter alia, that the goods so purchased shall be sold by the Purchasing Oil Company in such a manner that such sale shall be subject to levy of tax under this Act or under the Central Sales Tax Act, 1956, as the case may be. The Purchasing Oil Company shall also declare that for any reason, if the goods so purchased are despatched to a place outside the State otherwise than by way of sale in course of inter-state trade or commerce, the purchasing oil company, shall pay the tax on the turnover of the purchase of such goods.
(3) A single declaration may cover all transactions of sales made during a month. A copy of the declaration shall be preserved in the counterfoil by the Purchasing Oil Company and shall be produced before the Prescribed Authority on demand. The declaration to be issued by the Purchasing Oil Company shall be issued serially and chronologically:
Provided that goods which are purchased by furnishing the declaration and used by a dealer for the purposes other than those specified in such declaration, the sale price of such goods so utilised shall be included in his taxable turnover and assessed to tax accordingly.