Final answer:
All the substances listed, isopropanol, ethanol, and methanol, are alcohols because they each contain a hydroxyl (-OH) functional group. Thus, the correct answer is D) All of the answers are correct.
Step-by-step explanation:
The term alcohol refers to a chemical category of organic compounds that share certain characteristics, namely the presence of one or more hydroxyl (-OH) functional groups attached to an aliphatic carbon atom. To determine which substances can be considered alcohols, we can look at their molecular structures:
- Methyl alcohol, also known as methanol: CH3OH
- Ethyl alcohol, the kind found in beverages, also known as ethanol: CH3CH2OH
- Isopropyl alcohol, often used in rubbing alcohol, also known as 2-propanol: CH3CH(OH)CH3
By analyzing the information provided, it is clear that all the listed substances, isopropanol (isopropyl alcohol), ethanol (ethyl alcohol), and methanol (methyl alcohol) fall under the category of alcohols. This is because each of these compounds contains at least one hydroxyl group, fitting the general formula for alcohols (ROH), where R represents an alkyl group. Therefore, the correct answer to the question is D) All of the answers are correct.