The present subject is Chemistry / Biochemistry

Question	Subject	Answer given correctly	Marks	Total
(1 / 5)	Horticulture	No	0	0 / 1
(3 / 3)	Horticulture	Yes	1	1 / 2
(3 / 3)	Horticulture	Yes	1	2 / 3

Difference is 21