Q52 of 270 Page 98

State two important uses of plaster of Paris.

Plaster of Paris is used for making toys, materials for decoration and for making surfaces smooth.

Doctors use Plaster of Paris to set the fractured bone.


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52

How is plaster of Paris prepared? Write chemical equation of the reaction involved.

 52

Explain why plaster of Paris should be stored in a moisture-proof container.

 54

The salt which will give an acidic solution on dissolving in water is:

 55

One of the following salts will give an alkaline solution on dissolving in water. This is: