Q48. Which among the following aldehydes is most reactive towards nucleophilic addition reactions?
(1)\\
\includegraphics[alt={}]{smile-fb57fceabc4077272a735b94f59a36bafec19c14}
(2)\\
\includegraphics[alt={}]{smile-b55be8d8b0568a35930c9fc9a28a9d99a76deb51}
(3)\\
\includegraphics[alt={}]{smile-0f52e5b2036bf7f281965ae01b081be183ca98b2}
(4)\\
\includegraphics[alt={}]{smile-f097cc79920ad4c70efa6f9aefd0e937eba6b632}