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CBSE Class 10 Science 2020 · Paper 31/1/1 · Question 8

Acids, Bases and Salts 1 mark Easy

The chemical formula for plaster of Paris is :

(a) $CaSO_{4} \cdot 2 H_{2} O$
(b) $CaSO_{4} \cdot H_{2} O$
(c) $CaSO_{4} \cdot \frac{1}{2} H_{2} O$
(d) $2 CaSO_{4} \cdot H_{2} O$

Answer

(c)

CaSO_{4} \cdot \frac{1}{2} H_{2} O

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