PYQ NEET- Chemical Kinetics L-9

Question: If the rate constant for a first order reaction is $k$, the time $(t)$ required for the completion of $99 %$ of the reaction is given by :#

A) $t=\frac{4.606}{k}$

B) $t=\frac{2.303}{k}$

C) $t=\frac{0.693}{k}$

D) $t=\frac{6.909}{k}$

Answer: $t=\frac{4.606}{k}$#