NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Molisch reagent may contain which of the following reagents?
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Alpha napthol
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thymol
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resorcinol
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all of these
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Explanation:
Detailed explanation-1: -What is the composition of Molisch’s reagent? 3.75 gm of -naphthol in 25 ml of Ethanol 99% is the composition of Molisch’s reagent.
Detailed explanation-2: -Molisch’s test involves the addition of Molisch’s reagent (a solution of ∝-naphthol in ethanol) to the analyte and the subsequent addition of a few drops of concentrated H2SO4 (sulphuric acid) to the mixture.
Detailed explanation-3: -Molisch’s test is a general test for carbohydrates. This test is given by almost all of the carbohydrates. In this test, concentrated sulfuric acid converts the given carbohydrate into furfural or its derivatives, which react with -naphthol to form a purple coloured product.
There is 1 question to complete.