Exhaust fumes discharged from a smoky vehicle gradually become invisible as a result of? by Sunday | Aug 20 | Chemistry WAEC | 0 comments A. diffusion B. combustion C. absorption D. emission Correct Answer: Option A – diffusion Users Also Read These:If the temperature of water is gradually increased…A species whose populations has become so small that…lf the temperature of a small quantity of water in a…A constituent of the exhaust gases of motor vehicles…Carbon is often deposited in the exhaust-pipe of…