Question

Indigo is used in the}

• A. perfumery industry
• B. pharmaceutical industry
• C. dyeing industry
• D. food industry

Hint:

Indigo = blue dye used in textiles (especially jeans)—a classic GK question.

Answer 1

The Correct Option is C

Concept: Indigo is a plant-derived substance traditionally used for imparting color to materials, especially fabrics. Step 1:Identify its main application.
Indigo is primarily known for producing a blue color and is extensively used in:

• Fabric coloring processes
• Manufacturing of denim garments

Step 2:Reject unsuitable options.

• Perfumery → Not associated with indigo
• Pharmaceutical → No major role as a medicine
• Food industry → Not used as a food additive

Step 3:Conclusion.
\[ {\text{dyeing industry}} \]