Multiple choice Which of the following ‘Vitamin - Chemical Name’ combinations is INCORRECT? Vitamin B1 - Thiamine Vitamin B2 - Riboflavin Vitamin B3 - Niacin Vitamin B5 - Biotin Vitamin B9 - Folic acid Reveal answer Fill a bubble to check yourself D Correct answer Explanation Chemical name of vitamin B5 is pantothenic acid. Chemical name of vitamin B7 is biotin.