$A$ solution of sodium acetate in water will

Which of the following is a basic salt?

Which among the following salt solutions is basic in nature?

Solutions of equal concentration of the following substances are prepared separately. Which of these solutions will have the minimum $pH$?

$NH_4Cl$ is acidic,because

If the $pKa$ of lactic acid is $5$,then the $pH$ of $0.005 \ M$ calcium lactate solution at $25^{\circ} \ C$ is $........ \times 10^{-1}$ (Nearest integer). The structure of lactic acid is given below: