(c) Which property of plaster of Paris is utilized in making casts for broken limbs in hospitals?

(d) Explain why chlorine is used for sterilizing the drinking water supply.

Answer:

(c) Plaster of Paris has the property of hardening into a solid mass when wet.

(d) Chlorine is the most effective way to sterilize drinking water since it eliminates all bacteria and germs in the water. It has antiseptic properties.