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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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Description

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.