JEE Main Chemistry question

Chemistry Organic Chemistry - Some Basic Principles and Techniques JEE Main

A molecule is R₃C–H. If H is replaced by Z (giving R₃C–Z), and on doing so the electron density on the R₃C– part increases, then Z is a(n)

(A)Electron-attracting group
(B)Electron-withdrawing group
(C)Electron-repelling groupCorrect
(D)Either of the above

Answer: (C)

Solution

If electron density on the R₃C– fragment increases upon substitution, Z must be pushing (donating)

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Question ID VK-139642