The correct option is
C The explanation for the correct option:
(c)
- Coal gas is one of the most used fossil fuels.
- It is a flammable gaseous mixture with a very unpleasant smell
- It is obtained by the destructive distillation of coal i.e; heating in absence of air and formerly used for lighting and heating.
- Coal gas is a mixture of mainly hydrogen, methane, and carbon monoxide and some percentage of Ethylene().
Hence, the correct option is C