2A `to` B + C It would be a zero order reaction when : -

Options

A. the rate of reaction is proportional to square of conc. of A
B. the rate reaction remains same at any conc. Of A
C. the rate remains unchanged at any conc. Of B and C
D. the rate of reaction doubles if conc. Of B is increased to double

Explanation

It is a characteristic of zero order reaction.