A purple colour was obtained when sodium hydroxide solution and a drop of copper sulphate solution were added to a food substance. The food substance is likely to be a? by Sunday | Nov 24 | Biology WAEC | 0 comments A. carbohydrate B. fat C. protein D. sugar Correct Answer: Option C C. protein Users Also Read These:To what volume must 300cm³ of 0.60M sodium hydroxide…When sodium hydroxide solution is added to a…Assuming that brown colour is dominant over black…In the reaction between sodium hydroxide and…The metal used to recover copper from a solution of…