Question

The rates of a certain reaction `(d c//d t)` at different times are as follows
`{:("Time",,, Rate("mole litre"^(-1)sec^(-1)),),(0,,,2.8 xx 10^(-2),),(10,,,2.78xx10^(-2),),(20,,,2.81xx10^(-2),),(30,,,2.79xx10^(-2),):}`
The reaction is
A. Zero order
B. First order
C. Second order
D. Third order

Answer 1

Correct Answer - A
The concentration of reactant does not change with time for zero order reaction (unit of `K` suggests zero order) since reactant is in excess.