Question

The chemical which is used for plastering the broken bones is
(a) (CaSO₄)2H₂O
(b) MgSO₄.7H₂O
(c) FeSO₄. 7H₂O
(d) CuSO₄. 5H₂O

Answer 1

It is also used in medicine to make plaster casts to immobilize broken bones while they heal, though some orthopedic casts are made of fiberglass or thermoplastics. It is commonly used to precast and hold parts of ornamental plaster work placed on ceilings and cornices.

Answer 2

CaSo₄.2H₂O otherwise known as Calcium sulphate dihydrate is used for plastering.