121. (1) The Government may, by rules, define the articles and trades which shall be deemed to be dangerous or offensive for the purposes of this section. (2) Except under and in conformity with the conditions of a licence granted by the Corporation- (a) no person shall carry on any dangerous or offensive trade; (b) no premises shall be used or suffered to be used or any dangerous or offensive trade; and (c) no person shall store or keep in any premises- (i) any dangerous or offensive article except for domestic use; or (ii) any dangerous or offensive article in excess of such limits as may be fixed by the by-laws. (3) The Corporation may, with the previous sanction of the Government, prepare and enforce a scheme providing for the prohibition of dangerous and offensive trades in specific areas, within the City, and for the restriction of such trade in any area not so specified.