List of top Chemistry Questions on Kinetics asked in COMEDK UGET

The rate constant for a First order reaction at 560 K is $1.5 \times 10^{-6}$ per secon(D) If the reaction is allowed to take place for 20 hours, what percentage of the initial concentration would have converted to products?
A first order reaction proceeds to 90% completion. What will be the approximate time taken for 90% completion in relation to \(t_{1/2}\) of the reaction?