Punishment for alteration of denatured spirit etc

Whoever contravenes the provisions of section 11 of this Act shall be liable to be punished with imprisonment for a term which may extend to three years and with fine which may extend to five thousand rupees: Provided that in the absence of special and adequate reasons to the contrary to be mentioned in the judgement of the Court, such imprisonment shall not be less than two months and fine shall not be less than five hundred rupees. Provided further that in prosecution for an offence under this section, it shall be presumed, until the contrary is proved, that the alteration or attempt to alter any denatured spirit was done with the intention that such spirit may be used for human consumption as an intoxicant.