Question
Which compound among $CuSO _4 .5 H _2 O$ and $ZnSO _4$ is colourless?
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$\text{C}_2\text{H}_5\text{OCH}_2-\text{CH}-\text{CH}_3\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{CH}_3$
$(\text{C}_6\text{H}_5\text{CH}_2)_2\text{ Cd}+\text{2 CH}_3 \text{ COCl}\xrightarrow{\ \ \ \ }$