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Question
Biologists frequently have to test material for the presence of proteins. For this, they use a mixture of mercury, nitric acid and water: What is this reagent known as?
Biologists frequently have to test material for the presence of proteins. For this, they use a mixture of mercury, nitric acid and water: What is this reagent known as?
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Solution
The correct option is C Millon's reagent
Millon's reagent is an analytical reagent used to detect the presence of soluble proteins. A few drops of the reagent are added to the test solution, which is then heated gently. A reddish-brown coloration or precipitate indicates the presence of tyrosine residue which occur in nearly all proteins. Millon's test is not specific for proteins (it detects phenolic compounds), and so must be confirmed by other tests for proteins such as the biuret test and the ninhydrin reaction. The reagent is made by dissolving metallic mercury in nitric acid and diluting with water. The test was developed by the French chemist Auguste Nicolas Eugene Millon.So the correct option is 'Millon's reagent'.
Millon's reagent is an analytical reagent used to detect the presence of soluble proteins. A few drops of the reagent are added to the test solution, which is then heated gently. A reddish-brown coloration or precipitate indicates the presence of tyrosine residue which occur in nearly all proteins. Millon's test is not specific for proteins (it detects phenolic compounds), and so must be confirmed by other tests for proteins such as the biuret test and the ninhydrin reaction. The reagent is made by dissolving metallic mercury in nitric acid and diluting with water. The test was developed by the French chemist Auguste Nicolas Eugene Millon.
So the correct option is 'Millon's reagent'.
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