JEE · NEET Previous Year Question

Match List I with List II
$\begin{array}{ll}\text{List - I (Test)}& \text{List - II (Observation)}\\ \text{A.}{\text{Br}}_2\text{ water test}& \text{I.}\text{Yellow orange or orange red precipitate formed}\\ \text{B.}\text{Ceric ammonium nitrate test}& \text{II.}\text{Reddish orange colour disappears}\\ \text{C.}\text{Ferric chloride test}& \text{III.}\text{Red colour appears}\\ \text{D.}\text{2,4 - DNP test}& \text{IV.}\text{Blue, Green, Violet or Red colour appear}\end{array}$
Choose the correct answer from the options given below:

Topic: JEE PYQ

Answer: D. Full step-by-step solution below.