Half life of zero order reaction is 1 hour. If initial concentration of reactant is 2.0 mol $\text{L}^{-1}$, find the time required to decrease concentration from 0.50 to 0.25 mol $\text{L}^{-1}$

What is the term used for the minimum kinetic energy required for the reactant molecules to undergo reaction?

If time required for 90 % completion of a first order reaction is '$t$'. What is the time required for 99.9 % completion of reaction at same temperature?

Identify a nanomaterial having all three dimensions less than 100 nm?