MHT CET 2017 Chemistry Solved Paper

(b) Alkyl chlorides or bromides reacts with Nal in dry acetone to give alkyl iodide. This reaction is known as Finkelstein reaction.
R— X + Nal → RI + NaX [X= Cl, Br]
e.g., C2H5Br + Nal → C2H5I + NaBr