Food tests

Question 1

Test for starch

Answer 1

YELLOW - RED IODINE solution

Turns BLUE BLACK if starch is present

Question 2

Test for sugars

Answer 2

BLUE BENEDICT’S solution

Turns BRICK RED on heating if sugar such as glucose is present

Question 3

Test for Proteins

Answer 3

BLUE BIURET reagent

Turns PURPLE if protein is present

Question 4

Test for lipids

Answer 4

ETHANOL added to solution gives A CLOUDY WHITE LAYER if a lipid is present