The decolourization of purple colour of tetraoxomanganate (VII) ion is a test for? By: Sunday|Published on: Oct 14|Categories: Chemistry JAMB| 0 comments A. alkenes B. alkanols C. alkanals D. alkanes Correct Answer: Option A – alkenes Users Also Read These:When a colour blind woman marries a normal man; what…The colour of the solution formed when ethyne reacts…When a colour-blind man marries a carrier woman.…A certain savanna grasshopper changes colour from…The salt that reacts with dilute hydrochloric acid…SEE ALSO In the electrolytic extraction of calcium from calcium chloride, the cathode is?