Certificate issued by Corporation to be conclusive evidence of certain facts stated therein
36. Where in any prosecution instituted under this Act, any question arises as to whether any liquid or gas is a petroleum product, or as to the category to which a petroleum product belongs, a certificate purporting to be under the hand of the Chairman of the Board of Directors of the Corporation or any person authorized in that behalf by such Chairman to the effect that such liquid or gas is a petroleum product or assigning the category to which such petroleum product belongs shall be received in evidence as conclusive proof of the facts stated therein |