Test Preparation on Chemical Kinetics-II-Chemistry Test Series IIT JEE-2020

The rate of a first-order reaction is 0.04mol l -1s -1 at 10
seconds and 0.03mol l -1s -1 at 20 seconds after initiation of the
reaction. The half-life period of the reaction is

A first order reaction has a specific reaction rate of 10-2 sec-1 . How much time will it take for 20g of the reactant to reduce to 5g-

When initial concentration of the reactant is doubled, the halflife
period of a zero order reaction