Which two functional groups are commonly found in organic molecules, with an alcohol as an example for one and a carboxyl group as an example for the other?

Which two functional groups are commonly found in organic molecules, with an alcohol as an example for one and a carboxyl group as an example for the other?

• A. Amide group (-CONH2) and Ether group (-O-)
• B. Alcohol group (-OH) and Carboxyl group (-COOH)
• C. Ketone group (-C=O) and Amine group (-NH2)
• D. Nitrile group (-CN) and Sulfate group (-SO4)

Answer: (A)

This question tests your ability to spot common functional groups from simple examples. An alcohol has a hydroxyl group (-OH), while a carboxyl group is (-COOH), a carbonyl carbon with an OH attached on the same carbon. The option that lists these two groups matches the given examples directly, so it’s the best choice. Alcohols and carboxyl groups are among the most familiar and widely encountered in organic chemistry, with -OH giving hydrogen-bonding and alcohol behavior, and -COOH providing acidity and reactivity that lead to esters and other derivatives. The other options pair groups that don’t fit the alcohol and carboxyl examples described.

This question tests your ability to spot common functional groups from simple examples. An alcohol has a hydroxyl group (-OH), while a carboxyl group is (-COOH), a carbonyl carbon with an OH attached on the same carbon. The option that lists these two groups matches the given examples directly, so it’s the best choice. Alcohols and carboxyl groups are among the most familiar and widely encountered in organic chemistry, with -OH giving hydrogen-bonding and alcohol behavior, and -COOH providing acidity and reactivity that lead to esters and other derivatives. The other options pair groups that don’t fit the alcohol and carboxyl examples described.