The plant dye Henna imparts orangered colour to skin and hairs due to its reaction with which of the following?
Correct answer: D. Protein and amino acids
- A. Lipids
- B. Carbohydrates
- C. Amino acids
- D. Protein and amino acids
Explanation
Henna contains lawsone, which reacts with proteins and amino groups in keratin of the skin and hair to produce an orange-red stain. Students may choose carbohydrates because henna is a plant product, but the colour-forming interaction is mainly with keratin proteins and their amino acids.
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