Which of the following is NOT a form of alcohol?

The correct answer is that Amyl alcohol is not typically classified as a form of alcohol used in beverages or common consumption. Ethyl alcohol, also known as ethanol, is the type of alcohol found in alcoholic beverages and is safe for human consumption in appropriate amounts. Methyl alcohol, or methanol, is a type of alcohol that is used in industrial applications and can be toxic if ingested. Isopropyl alcohol, or isopropanol, is commonly used as a disinfectant and solvent but is also not safe for consumption.

Amyl alcohol, while it is indeed an alcohol, is a type of alcohol more commonly used in industrial applications and is not associated with alcoholic beverages. It is worth noting that it can also be toxic when consumed. Thus, it distinguishes itself from ethyl alcohol which is specifically the type of alcohol that individuals consume in drinks, making it the correct choice as the option that is not a form of alcohol used for consumption.