2. Which of the following that contains the carbonyl group and the substituents are R and R?
A. Aldehyde
C. Carboxylic acids
B. Alkyl
D. Ketone
3. Which of them contains the carbonyl group and the substituents are R and H?
A. Aldehyde
C. Carboxylic acids
B. Alkyl
D. Ketone
4. It is formed by the reaction of acids and amines.
A. Acetone
C. Amides
B. Alkyl acid
D. Ammonia
5. Aside from carboxylic acid, what is the other material that can be add on it in making Esters?
A. Acetate
C. Oil
B. Alcohol
D. Water​