Food Test Practicle

Question 1

What is the method to test starch in food?

Answer 1

1-place a food sample to a test tube
2-add a few drops of iodine
3-a sample contains starch will turn blue-black

Question 2

What is the method of testing for sugar in food?

Answer 2

1-set up a traditional water bath, using a Bunsen burner
2-add food sample to test to put a few drops of Benedicks solution
3-put a test tube in the water bath at 80°C for five minutes and note down any colour change in your table of results

Question 3

What colour what does sugar test go with a positive result?

Answer 3

Green to brick -read

Question 4

What colour what does sugar Test go with a negative test result?

Answer 4

Light blue (no change)

Question 5

What colour does a starch Test go with a positive result?

Answer 5

Blue-black

Question 6

What colour what is that Test go with a negative test result

Answer 6

Orange-brown

Question 7

What is the method of the test for protein in food?

Answer 7

1-add a food sample to the test tube
2-add a few drops of biuret solution

Question 8

What colour does a protein Test go when it has a positive result

Answer 8

Lilac-purple

Question 9

What colour does a protein Test go when it has a negative result

Answer 9

Blue