Question

Question No. 24
Lignans are identified by using the
reagent
Answer
A. Vanillin
B.Furfuraldehyde
C. Ferric chloride
D. Marquis Reagent
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Answer 1

Answer:

Lignans are identified by using the

reagent.

B.Furfuraldehyde

Answer 2

The correct answer is option (D.) Marquis Reagent

Explanation:

• Lignans are identified by using the Marquis Reagent.
• Marquis reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds.
• Marquis reagent can be prepared by adding 100 mL of concentrated (95–98%) sulfuric acid to 5 mL of 40% (v/v) formaldehyde.