3A `rarr` B + C
It would be a zero order reaction when :

Options

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

Answer

B

Explanation

For reaction `3A to B + C`
If it is zero reaction, then the rate remains same at any concentration of .A. or `(dx)/( dt) = k [A^0]`. It means that rate is independent on concentration of reactants.