Which of the following will have the highest enol content?

Identify which functional group is $NOT$ present in the given compound.

State whether the following statements are True or False:
$(i)$ There is a huge number of organic compounds because the carbon atom is very small.
$(ii)$ The number of organic compounds is huge because of catenation.
$(iii)$ Organic compounds are in a huge number because of valency.

Which of the following has the maximum enol content?

The exact order of acidity of the compounds $p-$nitrophenol,acetic acid,acetylene and ethanol is

Select the correct statement.