Hint: Ethanol, also mentioned as ethyl alcohol, drinking alcohol, gain alcohol, or simply alcohol is an organic chemical compound. It is a colourless, volatile, flammable liquid with a distinctive odour.
Denatured alcohol is ethanol or ethyl alcohol with one or more chemicals or denaturants added to it, rendering it unfit for human consumption. Denaturing is the process of extracting property from alcohol, such as the ability to drink it, rather than chemically modifying or decomposing it, so denatured alcohol also contains ethyl alcohol.
Unlike denaturation in biochemistry, denaturing alcohol does not alter the ethanol molecule chemically. Instead, ethanol is combined with other chemicals to create a foul-tasting, often poisonous solution. Many of these solutions make it impossible to isolate the components on purpose.
Denatured alcohol, also known as methylated spirits, wood spirit, or denatured rectified spirit, is ethanol that has been treated with toxic, bad-tasting, and foul-smelling chemicals to prevent recreational use. It is often dyed so that it can be visually recognized. To make denatured alcohol toxic, add pyridine, methanol, or both, and add denatonium to make it bitter.
So, the answer is Option B. Methanol and pyridine
Denatured alcohol has no benefits over regular ethanol for any purpose; it is merely a public policy compromise. Since denatured alcohol is sold without the sometimes high taxes associated with alcohol intended for human consumption, it is a less expensive option for most non-drinking applications. Some people would most likely drink pure ethanol if it were made cheaply available for solvents, fuel, or medicinal purposes.
Denatured alcohol can be found in lab reagent alcohol, hand sanitizer, rubbing alcohol, and the fuel for alcohol lamps. Cosmetics and other personal care items contain it as well.