The reaction $CH_3COOH + Cl_2 \xrightarrow{P} ClCH_2COOH + HCl$ is called

Two statements are given below:
Statement $I:$ The melting point of monocarboxylic acids with an even number of carbon atoms is higher than that of acids with an odd number of carbon atoms immediately below and above it in the series.
Statement $II:$ The solubility of monocarboxylic acids in water decreases with an increase in molar mass.
Choose the most appropriate option.

In the following reaction,$X$ and $Y$ respectively are:
$C_2H_5OH$ $\xrightarrow{KMnO_4 / H^+} X$ $\xrightarrow{C_2H_5OH / H_2SO_4, \Delta} CH_3COOC_2H_5$

The end product of the following reaction is: $CH_3-CH_2-COOH$ $\xrightarrow[\text{red } P]{Cl_2} X$ $\xrightarrow{\text{Alc. KOH}} Y$

Which of the following has the highest $pK_a$ value?

Give the reaction for heating benzoic acid with soda lime,also known as the decarboxylation of benzoic acid.