It sort of depends on how restrictive your definition of "carbohydrate" is. If you're using it in a way synonymous with "saccharide" (common, but not necessarily the only possible definition), then they will have hydroxyl groups and might have either an aldehyde or a ketone group (or they may not, for example glucose in its hemiacetal form), but they will not have a carboxylic acid group.
The functional groups in vanillin are a hydroxyl group (-OH) and an aldehyde group (-CHO).
It is a carboxyl functional group, consisting of a carbonyl and hydroxyl group. It is an ACID [moiety].
It's the carboxylic acid functional group (COOH).
I believe it contains Aldehyde and alcohol
Carbonyl
there are two functional groups in an aldoheptose: hydroxyl and aldehyde.
The functional groups in vanillin are a hydroxyl group (-OH) and an aldehyde group (-CHO).
that is an aldehyde or ketone and that has more than one hydroxyl group
Glucose is a type of simple sugar. There are two functional groups in glucose. The functional groups are aldehyde and hydroxyl.
The functional group in the class known as alcohols is the hydroxyl (A) group. Alcohols are organic compounds containing the -OH functional group.
It is a carboxyl functional group, consisting of a carbonyl and hydroxyl group. It is an ACID [moiety].
Lactones are cyclic esters formed by the reaction between a carboxylic acid and a hydroxyl group. The functional groups involved in the formation of lactones are the carboxylic acid group (-COOH) and the hydroxyl group (-OH) on the same molecule.
It's the carboxylic acid functional group (COOH).
I believe it contains Aldehyde and alcohol
Lactic acid belongs to the carboxylic acid functional group. This functional group consists of a carbonyl group (C=O) and a hydroxyl group (OH) attached to the same carbon atom.
Carbonyl
The functional isomer of a carboxylic acid is an ester. Esters have a similar molecular formula to carboxylic acids, but the functional group is different - an ester has a carbonyl group bonded to an oxygen atom, rather than a hydroxyl group like in carboxylic acids.