question_answer2) The reaction, \[R-\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{C}}\,-X+N{{u}^{\text{O-}}}\] \[\xrightarrow{{}}R-\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{C}}\,-Nu+{{X}^{\text{O-}}}\] is fastest when X is
AIEEE Solved Paper-2005