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Assertion (A) : Plaster of Paris is used by doctors for setting fractured bones. 

Reason (R) : When plaster of Paris is mixed with water and applied around the fractured limbs, it sets in to a hard mass.

  • A.Both A and R are true and R is the correct explanation of A.
  • B.Both A and R are true but R is NOT the correct explanation of A.
  • C.A is true but R is false.
  • D.A is false but R is true.

Answer: A

Correct answer: Both A and R are true and R is the correct explanation of A.

Plaster of Paris takes up water and sets within minutes into a hard mass of gypsum. That is precisely why a bandage soaked in it can be moulded round a limb and left to harden, holding the broken bone still. Both are true and R explains A.

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