Cooking gas is mixture of which of the following two gases? A) Methane & Carbon dioxide B) Oxygen & Nitrogen C) Butane & Propane D) Oxygen & Methane Related MCQs: The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture”. This is The over-cooking of food should be avoided because it: Famous cooking expert and T.V. personality Zubaida Tariq passed away on: Change the voice. (Active to passive): Right now someone is cooking school lunch in the cafeteria.