The decolourization of purple colour of tetraoxomanganate (VII) ion is a test for? by Sunday | Oct 14 | Chemistry JAMB | 0 comments A. alkenes B. alkanols C. alkanals D. alkanes Correct Answer: Option A – alkenes Users Also Read These:If a charged ion goes through combined electric and…The colour of the solution formed when ethyne reacts…Assuming that brown colour is dominant over black…The following compounds decolourize acidified…The following will decolourize acidified potassium…