I. Reagents

Question 1

iodine tests for _____
(+) _____, (-) _____

Answer 1

carbohydrates
(+) blue-black, (-) brown

Question 2

biuret tests for _____
(+) _____, (-) _____

Answer 2

protein
(+) purple, (-) blue

Question 3

benedict tests for _____
(+) _____, (-) _____

Answer 3

glucose
(+) brick red, (-) blue

Question 4

DNS tests for _____
(+) _____, (-) _____

Answer 4

reducing sugars
(+) orange-red, (-) yellow

Question 5

ninhydrin tests for _____
(+) _____, (-) _____

Answer 5

amino acids
(+) purple (TLC: orange), (-) clear