(a) on gasoline when the gasolinei. was used to supply a farm machinery engine, except a pleasure vehicle or truck, but only while that machinery was used for farming work, provided that the principal occupation of the consumer is farming in respect of an immovable the consumer owns or leases;
ii. was used to supply the engine of a fishing boat, but only while that boat was used for fishing, provided that the principal occupation of the consumer is fishing or the processing and the marketing of fish;
iii. was used to supply a stationary engine;
iv. was used as an ingredient in a product manufactured by a person in the course of his principal occupation;
v. was used for purposes of scientific research, experimentation or demonstration, unless it was used to supply a propulsion engine;
vi. was used to operate a pumper truck while it was used to fight forest fires;
vii. having been purchased in Québec by a person carrying on a business, was exported and used outside Québec, unless the gasoline was put in a tank supplying the engine of a pleasure vehicle, of a motor vehicle used to transport goods or passengers other than a prescribed motor vehicle, as determined under subparagraph 3 of the first paragraph of section 50.0.12, of such a prescribed motor vehicle or of an aircraft;
viii. was used to operate a motor vehicle registered for use exclusively on private land or a private road, or the registration certificate of which provides for that use, which is used for farming, forest or mining operations as defined by regulation;
ix. was used to supply an aircraft engine while being tested on the ground or in the air; or
x. was used to supply the engine of a commercial vessel described as a commercial vessel by regulation, but only if the gasoline was poured directly from the delivery nozzle of the retail dealer into the tank installed as standard equipment for supplying the engine of that vessel;
(b) on non-coloured fuel oil when that fuel oili. was used as an ingredient in a product manufactured by a person in the course of his principal occupation;
ii. having been purchased in Québec by a person carrying on a business, was exported and used outside Québec, unless it was put in a tank supplying the engine of a pleasure vehicle, of a motor vehicle used to transport goods or passengers other than a prescribed motor vehicle, as determined under subparagraph 3 of the first paragraph of section 50.0.12, or of such a prescribed motor vehicle;
iii. in the case of bunker fuel or crude oil, was used to supply a stationary engine;
iv. was used to operate a motor vehicle registered for use exclusively on private land or a private road, or the registration certificate of which provides for that use, which is used for farming, forest or mining operations as defined by regulation;
v. in the case of biodiesel fuel, was not mixed with another type of fuel at the time of its acquisition; and