2. Pharmaceutical Chemistry

Drug Stability — Quiz

Test your understanding of drug stability with 5 practice questions.

Practice Questions

Question 1

Which chemical degradation pathway involves cleavage of drug molecules by reaction with water?

Question 2

According to the Arrhenius equation, how does a 10°C increase in storage temperature typically affect the degradation rate constant $k$?

Question 3

For a drug following first-order degradation with $k=0.1\\ \text{year}^{-1}$, what is its $t_{90}$ shelf life (time to 90\% remaining)?

Question 4

Which antioxidant excipient is commonly added to formulations to inhibit oxidative degradation?

Question 5

Under ICH stability guidelines, which set of conditions is used for accelerated stability testing?