1. Which of the following chemicals is commonly used as a disinfectant in

healthcare facilities?

a) Hydrochloric acid

b) Sodium hydroxide

c) Hydrogen peroxide

d) Ethanol

Answer: c) Hydrogen peroxide

Rationale: Hydrogen peroxide is commonly used as a disinfectant in healthcare

facilities due to its broad-spectrum antimicrobial properties. It is effective

against a wide range of microorganisms, including bacteria, viruses, and

fungi.

2. Which of the following equipment is commonly used to measure the volume

of a liquid?

a) Beaker

b) Burette

c) Test tube

d) Petri dish

Answer: b) Burette

Rationale: A burette is a long, graduated glass tube with a stopcock at one end

and is specifically designed for measuring and dispensing precise volumes of

liquid. It offers higher accuracy and precision compared to other common

laboratory glassware such as beakers, test tubes, and Petri dishes.

3. When conducting a titration, which indicator is commonly used to determine