Organic chemistry

1.     In the esterification, first track is due to _____ on carboxylic acid

a)     Hydrogen ion

b)    Alcohols

c)     Water

d)    All

2.     Essential amino acids are those amino acids with

a)     Body cannot synthesize

b)    Body can synthesize

c)     Alpha- amino acids

d)    Beta-amino acids

3.     Which of the following statement about acetic anhydride is not correct

a)     It is immiscible with water but is hydrolyzed to give acetic acid

b)    It is prepared by the action of acetyl chloride on the sodium salt of acetic acid.

c)     It reacts with ammonia to give acetamide

d)    It is a strong acid

1.a

2.a

3.d