Plaster of Paris is used for which purpose?
Answer and explanation
Correct answer: Making casts for fractured bones
Plaster of Paris, or calcium sulphate hemihydrate, has the formula CaSO₄·½H₂O. When mixed with water, it changes back into gypsum and sets into a hard, rigid mass. Because it can be moulded before setting and then provides firm support, doctors use it to make casts around fractured bones. The other options do not describe its characteristic application, so option A is correct.
Frequently asked questions
What is the correct answer to this question?
Making casts for fractured bones
Why is this the correct answer?
Plaster of Paris, or calcium sulphate hemihydrate, has the formula CaSO₄·½H₂O. When mixed with water, it changes back into gypsum and sets into a hard, rigid mass. Because it can be moulded before setting and then provides firm support, doctors use it to make casts around fractured bones. The other options do not describe its characteristic application, so option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
