Question

how is plaster of paris set into a hard mass​

Answer 1

Answer:

they are sended by aeroplanes etc

with seriously risk and they will stump from up places like India China France etc......

hope it helps you.....

Answer 2

We know that POP(Plaster if Paris) is made of gypsum.

When we heat gypsum, a hard substance, it looses the water molecules and turns to powder, which is later called POP.

When we add water to POP it against turns to gypsum.

The formulae of gypsum and POP are in the image

MARK AS BRAINLIEST