Discussion :: Chemistry
- Setting of plaster of paris involves
|
A.
Dehydration process |
|
B.
Hydration to form other hydrates |
|
C.
Oxidation process |
|
D.
Reduction process |
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Answer : Option B
Explanation :
The setting of plaster of Paris takes place by hydration due to the formation of a solid crystalline hydrate and hardening of Plaster of Paris is hydration reaction, which is reverse of the dehydration of gypsum. Plaster of Paris quickly sets to a hard mass when made into a thin paste with water. A slight expansion takes place in the process and heat is evolved. This process is exothermic.
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