Match the following:
Compound Uses
$1$. Soda ash $a$. In purification of sugar
$2$. Calcium oxide $b$. As an antacid
$3$. Baking soda $c$. In paper and textile industries
$d$. To prepare pure fats and oils

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(A) $1-c, 2-a, 3-b$.
$1$. Soda ash $(Na_2CO_3)$ is used in paper and textile industries.
$2$. Calcium oxide $(CaO)$ is used in the purification of sugar.
$3$. Baking soda $(NaHCO_3)$ is used as an antacid.

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