question_answer

The increasing order of the reactivity of the following with \[LiAl{{H}_{4}}\]is

[A]

[B]

[C]

[D]

  [JEE Main Online Paper Held On 12-Jan-2019 Evening]

A) \[\left( A \right)<\left( B \right)<\left( D \right)<\left( C \right)\]

B) \[\left( B \right)<\left( A \right)<\left( D \right)<\left( C \right)\]

C) \[\left( B \right)<\left( A \right)<\left( C \right)<\left( D \right)\]

D) \[\left( A \right)<\left( B \right)<\left( C \right)<\left( D \right)\]

Correct Answer: A

Solution :

Rate of nucleophilic attack on carboxyl group \[\propto \] Electrophilicity of carboxyl group