Chemical Test of Alkaloid
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Questions and Answers

What is the purpose of a chemical test of alkaloid?

  • To convert alkaloids into other chemical compounds
  • To identify the presence of alkaloids in a substance (correct)
  • To measure the pH of an alkaloid solution
  • To study the effects of alkaloids on human health
  • Which reagent is commonly used in the chemical test of alkaloid for the formation of precipitates?

  • Widmark reagent
  • Dragendorff's reagent (correct)
  • Barfoed's reagent
  • Tollen's reagent
  • What color change indicates a positive result in the chemical test of alkaloid with Dragendorff's reagent?

  • Yellow to red
  • Clear to cloudy
  • Blue to green
  • Orange to brown (correct)
  • Study Notes

    Chemical Test of Alkaloid

    • The purpose of a chemical test of alkaloid is to identify the presence of alkaloids in a substance.
    • The commonly used reagent in the chemical test of alkaloid for the formation of precipitates is Dragendorff's reagent.
    • A positive result in the chemical test of alkaloid with Dragendorff's reagent is indicated by a color change to orange-red or orange-brown.

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    Test your knowledge of alkaloids with this quiz. Learn about the purpose of a chemical test, commonly used reagents, and the color changes indicating positive results.

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