We use chemical reagents in food tests to identify the presence of biological molecule.Identify the correct colour change you would expect, when a substance tests positively for the presence of lipid after ethanol and water are added.Clear to cloudy emulsionBlue to brick redOrange-brown to blue-blackBlue to purpleI DON'T KNOWSUBMIT ANSWER

We use chemical reagents in food tests to identify the presence of biological molecule.Identify the correct colour change you would expect, when a substance tests positively for the presence of glucose after Benedict's solution is added.Blue to purpleOrange-brown to blue-blackClear to cloudy emulsionBlue to brick redI DON'T KNOWSUBMIT ANSWER

Which reagent is used to test for the presence of lipids?

Which one of the following is used to test for the presence of lipid?Iodine solutionBiuret reagentEthanol and waterBenedict’s reagentI DON'T KNOWSUBMIT ANSWER

chemical name for food colourings like red blue green

.Which test shows a positive result with a colour change of blue to purple?