• Chemical Removal of Vegetable Matter from Wool:
• Raw greasy fleece frequently contains heavy vegetable contamination (burrs, seeds, straw, twigs).
• Carbonization:
• Wool is immersed in a dilute mineral acid solution ($5-7\%\text{ H}_2\text{SO}_4$), squeezed, and baked in a carbonizing oven at $105-110^\circ\text{C}$.
• The acid dehydrates and chars the cellulosic vegetable matter into brittle, friable carbon without damaging the acid-resistant wool keratin.
• Subsequent fluted crush rollers pulverize the charred carbon into dust, which is blown away.
• nalysis:
• (Carbonization): Correct.

Correct option: (1) Carbonization