The rate constant for a first order reaction is $60 \text{ s}^{-1}$. How much time will it take to reduce the concentration of the reactant to $1/20^{\text{th}}$ of its initial value?

Which of the following statements is NOT true about the rate constant?

Which of the following assertions about the extent of physisorption is correct?

Which of the following is not characteristics of interhalogen compounds?