QJEEM25Chd046: JEE Main 2025 Chemistry - Class 12 JEEM25Chd046 Solution: Drug becomes ineffective after decomposition. The original…

Drug $X$ becomes ineffective after $50 \%$ decomposition. The original concentration of drug in a bottle was $16 \mathrm{mg} / \mathrm{mL}$ which becomes $4 \mathrm{mg} / \mathrm{mL}$ in 12 months. The expiry time of the drug in months is _________.

Assume that the decomposition of the drug follows first order kinetics.