Vanillin is a flavoring agent which occurs naturally in the vanilla bean, the seed of an orchid. identify the functional group circled.
a) aldehyde
b) ketone
c) alcohol
d) carboxylic acid 34)

A) Aldehyde

Explanation:

Functional group in organic compounds refers to group of atoms that is responsible for chemical characteristics of organic compounds.

The one present in Vanilin is Aldehyde( -CHO) which are generally always present in flavoring agent.

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

it is the most commonly accepted one