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13. Find out a qualitative test for proteins, fats and oils, amino acids and test any fruit juice, saliva, sweat and urine for them.
Answers (1)
A qualitative test for proteins is the xanthoproteic test. When urine is tested for protein with the help of the xanthoproteic test, the presence of a yellow precipitate confirms the presence of protein in it.
The qualitative test for fats is emulsification test. In this test, the experimental material is treated with ethanol and then dissolved in water. Formation of emulsion confirms the presence of fats.
The qualitative test for oils is the paper test. The experimental material is put on a paper. If oil marks are left, the presence of oil is confirmed.
The qualitative test for amino acids is ninhydrin test.
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