`(A) + Cl_(2) overset(hv)(to)` monochloro product
To maximise the yield of monochloro product in the above reaction?

Options

A. `Cl_(2)` must be added in excess
B. Reactant (A) must be added in excess
C. Reaction must be carried out in dark
D. Reaction must be carried out with equimolar mixture of `Cl_(2)` and A

Answer

b

Explanation

If reactant (A) is added in excess then maximum collission between (A) and `Cl^(**)` in the rate determineing step.