Question

Which of the following is not the property of Plaster of pairs
A) On mixing with water it solidifies rapidly
B) It is used for setting of fractured bones
C) It easily lose water when kept open to air
D) On mixing with water it becomes hard solid​

Answer 1

Answer:

option c is not the property of plaster of Paris

actually when it kept outside it's easily absorbs water

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Answer 2

Answer:

C) It easily loses water when kept open to air

Explanation:

The plaster of Paris is calcium sulphate hemihydrate.

The plaster of Paris should be stored in a moisture-proof container because with the presence of moisture, can cause the slow setting of the plaster of Paris by bringing about its hydration.

The following  are the uses of plaster of Paris:

     (i) It is used as a fireproofing material and for making chalks.

     (ii) it is used in hospitals for setting fractured bones in the right position to ensure correct healing.

(iii) It is used in making casts and patterns for moulds and statues.

(iv) It is used as cement in ornamental casting and for making decorative materials.

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