Test For Lipids (Fats)

Question 1

What is the first step in testing for lipids using ethanol?

Answer 1

Introduce 2 cm³ oil into a test tube using a clean syringe.

Question 2

What volume of ethanol should be added to the test tube for lipid testing?

Answer 2

2 cm³ ethanol using a clean plastic pipette.

Question 3

What should you do after adding ethanol to the test tube?

Answer 3

Shake the test tube.

Question 4

What is the next step after shaking the test tube in lipid testing?

Answer 4

Pour into a test tube containing water.

Question 5

What indicates a positive result for lipids in the test?

Answer 5

The solution becomes cloudy as an emulsion is formed.

Question 6

What indicates a negative result for lipids in the test?

Answer 6

There is no colour change.

Question 7

Fill in the blank: A positive result for lipids is indicated by the solution becoming _______.

Answer 7

cloudy

Question 8

True or False: A negative result for lipids is indicated by a cloudy solution.

Answer 8

False