The reaction [AIEEE 2005] , is fastest when \[X\] is

1.	The reaction [AIEEE 2005] , is fastest when \[X\] is
A.	\[Cl\]
B.	\[N{{H}_{2}}\]
C.	\[O{{C}_{2}}{{H}_{5}}\]
D.	\[OCOR\]
Answer» B. \[N{{H}_{2}}\]

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The reaction [AIEEE 2005] , is fastest when \[X\] is

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