Molisch's Test for Carbohydrates Quiz
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Questions and Answers

What is the purpose of adding concentrated H₂SO₄ in Molisch's test?

  • To produce a pink-purple ring
  • To react with hexoses and form 5-hydroxymethyl furfural
  • To prevent unwanted reactions in the mixture (correct)
  • To react with the test reagent and form furfurals

    • What is the composition of Molisch reagent?

  • A solution of pentose in ethanol
  • A solution of naphthol in ethanol (correct)
  • A solution of furfural in ethanol
  • A solution of hexose in ethanol

    • What do furfurals react with in the Molisch's test to produce a pink-purple ring?

  • Hexose
  • A-naphthol present in the test reagent (correct)
  • Concentrated H₂SO₄
  • Pentose

    • What is the purpose of adding concentrated H₂SO₄ in Molisch's test?

    <p>To dehydrate the furfurals formed</p> Signup and view all the answers

    What do furfurals react with in the Molisch's test to produce a pink-purple ring?

    <p>a-naphthol present in the test reagent</p> Signup and view all the answers

    What is the composition of Molisch reagent?

    <p>Naphthol in ethanol</p> Signup and view all the answers

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