food testing

Question 1

how do you test for starch

Answer 1

using iodine solution

if it turns yellow-orange no starch
if it turns black-blue contains starch

Question 2

how do you test for sugar

Answer 2

the Benedict’s solution

blue solution turns orange, yellow, red there sugar

Question 3

how do you test for protein

Answer 3

copper sulfate solution
sodium hydroxide solution
if it turns purple the food contains protein