(a) Define the term functional group. Identify the functional group present in (i) `H-overset(O)overset(||)(C)-H` (ii) `H-underset(H)underset(|)overset(H)overset(|)(C)-overset(OH)overset(|)(C)=O` (b) What happens when 5% alkaline `KMnO_(4)` solution is added drop by drop to warm ethanol taken in a test tube? State the role of alkaline `KMnO_(4)` solution in this reaction.

(a) Define the term functional group. Identify the functional group pr

1.	(a) Define the term functional group. Identify the functional group present in (i) `H-overset(O)overset(\|\|)(C)-H` (ii) `H-underset(H)underset(\|)overset(H)overset(\|)(C)-overset(OH)overset(\|)(C)=O` (b) What happens when 5% alkaline `KMnO_(4)` solution is added drop by drop to warm ethanol taken in a test tube? State the role of alkaline `KMnO_(4)` solution in this reaction.
Answer» (a) For the definition o functional group, The functional groups present in the compound are: Aldehydic (al) and carboxyl group (oic acid): (b) Ethanol is oxidised to ethanoic acid. In tthis, dilute alkaline `KMnO_(4)` acts as an oxidising agent. `underset("Ethanol")(CH_(3)CH_(2)OH)+underset("(released from oxidising agent)")(2(O))tounderset("Ethanoic acid")(CH_(3)COOH)+H_(2)O`