Acrolein test is positive for:
Acrolein test is used for detecting the presence of glycerol or fat. In the presence of a dehydrating agent, when fat is treated strongly, like potassium bisulphate (KHSO4), the glycerol portion of the molecule is dehydrated to form an unsaturated aldehyde, acrolein that has a pungent irritating odor.
Acrolein test is positive for oils and fats.
When fat is heated in the presence of \(KHSO _{4}\) (dehydrating agent) the glycerol portion of the molecule is dehydrated and forms an unsaturated aldehyde \(CH _{2}= CH - CHO\) (acrolein), a bed-smelling compound. Such pungent irritating odor or smell of acrolein confirms the presence of fat or oil. It is the test for fat.
Therefore, option C is the correct answer.
Biomolecules are the most essential organic molecules, which are involved in the maintenance and metabolic processes of living organisms. These non-living molecules are the actual foot-soldiers of the battle of sustenance of life.
There are four major classes of Biomolecules – Carbohydrates, Proteins, Nucleic acids and Lipids.