$\begin{array}{1 1} \text{(a) Lime water turns milky because of formation of calcium carbonate} \\ \text{(b) Lime water turns milky because of formation of water} \\ \text{ (c) Lime water turns red because of formation permanganate} \\ \text{
(d) Lime water turns red because of formation of copper sulphate}
\end{array} $
