Exhaust fumes discharged from a smoky vehicle gradually become invisible as a result of? By: Sunday|Published on: Aug 20|Categories: Chemistry WAEC| 0 comments A. diffusion B. combustion C. absorption D. emission Correct Answer: Option A – diffusion Users Also Read These:Which of the following is released from car exhaust…Which of the following pairs of gases are pollutants…When the pressure of the gas in a discharge tube is…A constituent of the exhaust gases of motor vehicles…A constituent of the exhaust fumes from electricity…SEE ALSO The bond formed when ammonia reacts with hydrogen ion to form ammonium ion is?