Which of the following gases is colourless, odourless and soluble in potassium hydroxide solution? by Sunday | May 13 | Chemistry WAEC | 0 comments A. NO2 B. SO2 C. NH3 D. CO2 Correct Answer: Option D D. CO2 Users Also Read These:A solution which on treatment with hydrochloric acid…Sulphur is soluble in ethanol but not in water while…The colour of the solution formed when ethyne reacts…When a solution of ammonium trioxocarbonate (IV) is…When sodium hydroxide solution is added to a…