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Questions and Answers
What is the purpose of a chemical test of alkaloid?
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?
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?
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)
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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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