Question

carbohydrates in various vitamins

Answer 1

A carbohydrate is a biomolecule consisting of carbon, hydrogen and oxygen atoms, usually with a hydrogen–oxygen atom ratio of 2:1; in other words, with the empirical formula Cₘₙ. This formula holds true for monosaccharides.
For vitamins:

Vitamin B1 (Thiamine) ...

Vitamin B2 (Riboflavin) ...

Vitamin B3 (Niacin) ...

Vitamin B5 (Pantothenic acid) ...

Vitamin B6 (Pyridoxine) ...

Vitamin B9 (Folic acid) ...

Vitamin B12 (Cobalamin) ...

Vitamin H (Biotin)