Question

10. Which of the following pairs of
substances are chemically same?
(a) Lime water and milk of lime
O
(b) Dead burnt plaster and gypsum
O
(c) Both the above
O
(d) None of the above is correct​

Answer 1

Explanation:

Anhydrous calcium sulphate, CaSO

4

is known as 'dead burnt plaster'. It is formed by heating gypsum, CaSO

4

.2H

2

O at a temperature above 393 K.