B2 food tests

Question 1

What is the test for reducing sugars?

Answer 1

The Benedict’s test.

Question 2

True or False: The Biuret test is used to detect starch.

Answer 2

False.

Question 3

Fill in the blank: The _______ test is used to identify the presence of lipids.

Answer 3

Sudan III.

Question 4

What color change indicates a positive result in the iodine test for starch?

Answer 4

Blue-black.

Question 5

Which reagent is used in the test for proteins?

Answer 5

Biuret reagent.

Question 6

Multiple Choice: What color will Benedict’s solution turn if reducing sugars are present?

Answer 6

Brick red.

Question 7

What is the purpose of the Sudan III test?

Answer 7

To test for the presence of lipids.

Question 8

True or False: A positive Biuret test will result in a blue color.

Answer 8

False.

Question 9

What is the initial color of iodine solution before testing for starch?

Answer 9

Brown.

Question 10

Name one type of carbohydrate that can be detected using the Benedict’s test.

Answer 10

Glucose.