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:In the reaction between sodium hydroxide and…A purple colour was obtained when sodium hydroxide…The colour of the solution formed when ethyne reacts…To what volume must 300cm³ of 0.60M sodium hydroxide…When sodium hydroxide solution is added to a…