(1) No dealer shall, while being liable to pay tax under section 3, carry on business as a dealer unless he has been registered and possesses a certificate of registration.
     (2) Every dealer required by sub-section (1) to be registered shall make an application for registration within such time, in such manner and to such authority, as may be prescribed.
     (3) If the said authority is satisfied that the application is in order, it shall, in accordance with such rules as may be prescribed, register the applicant within the prescribed period and grant him a certificate of registration in the prescribed form which shall specify the goods or class of goods for the purposes of sub-clause (v) of clause (a) of sub-section (2) of section 4:
     Provided that if the said authority is of opinion that the application is not in order, it shall, by an order passed within the said period and for reasons to be recorded in writing, reject the application:
     Provided further that no goods or class of goods in respect of which the ¹[point of sale] has been specified by the Administrator under section 5 shall be specified in a certificate of registration, and where a notification is issued under that section subsequent to the grant of any certificate of registration in respect of any goods or class of goods specified in a certificate, if the said certificate shall be deemed to have been amended to omit the references to such goods or class of goods.
     (4) For the removal of doubts, it is hereby declared that the goods or class of goods to be specified in a certificate of registration granted under sub-section (3) of this section or sub-section (2) of section 16 shall not include goods referred to in sub-clause (i) or sub-clause (ii) of clause (a) of sub-section (2) of section 4.