Formic acid and acetic acid can be distinguished by

Which of the following substances produces ethane upon heating with soda lime?

What is the product formed when ethyl acetate reacts with an excess of $CH_3MgI$ followed by hydrolysis?

Which reagent is used to convert ethanoic acid into ethanol?

$Methyl$ propanoate on hydrolysis with dil $NaOH$ forms a salt that on further acidification with conc. $HCl$ forms:

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.