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Substance(s) which reduces/reduce the ra...

Substance(s) which reduces/reduce the rate of setting of Plaster of Paris is (are)

A

NaCl

B

Alum

C

Borax

D

`CaSO_4`

Text Solution

Verified by Experts

The correct Answer is:
B,C
Alum and borax reduce the rate of setting of Plaster of Paris. Sodium chloride accelerates the rate of setting while `CaSO_4` has no effect on the rate of setting.
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