Amount of carbon dioxide produced by the combustion of hydrocarbons is proportional to the number of carbon atoms in them.
True
As the number of carbon atoms in the hydrocarbons increase, the amount of carbon dioxide produced by their combustion increases. 1 kg of methane produces 2.75kg of carbon dioxide on combustion while 1kg of butane produces 3.03kg of carbon dioxide upon combustion. Therefore, the given statement is true.