Concept: Organic pollutants are pollutants that contain carbon-based organic compounds. Hydrocarbons, ketones, and alcohols are examples of organic compounds.
Step 1: Understanding organic compounds.
Organic compounds generally contain carbon and hydrogen. Many organic pollutants come from fuels, solvents, industrial chemicals, and incomplete combustion.
\[
\text{Organic pollutant} \Rightarrow \text{Carbon-based pollutant}
\]
Step 2: Checking the given options.
Hydrocarbons are organic compounds made of carbon and hydrogen.
Ketones are organic compounds containing a carbonyl group.
Alcohols are organic compounds containing the hydroxyl group.
Step 3: Identifying the non-organic pollutant.
Ozone is made of three oxygen atoms:
\[
O_3
\]
It does not contain carbon. Therefore, it is not an organic pollutant.
Hence, the correct answer is Ozone.