What is obtained upon the hydrolysis of the given molecule?

Identify the saturated and unsaturated fatty acids from the following list:
$I-$ Acetic acid,$II-$ Methanoic acid
$III-$ Arachidonic acid,$IV-$ Palmitic acid
$V-$ Stearic acid,$VI-$ Oleic acid
Select the correct grouping for Saturated fatty acids and Unsaturated fatty acids.

In the structure of lipids,the number of $H$ atoms is much higher than the number of $O$ atoms.

Fat on hydrolysis gives which alcohol?

How many carbon atoms are present in a molecule of palmitic acid?

Consider the following four statements $(a-d)$ and select the option which includes all the correct ones only $:-$
$(a)$ Lipids are generally water insoluble.
$(b)$ The $R$ group could be a methyl $(-CH_3)$ or ethyl $(-C_2H_5)$ or higher number of $-CH_2$ groups ($1$ carbon to $19$ carbons) in fatty acids.
$(c)$ Palmitic acid has $16$ carbons including the carboxyl carbon.
$(d)$ Arachidonic acid has $21$ carbon atoms including the carboxyl carbon.