Question

Vishal noticed that for making wool hairs are being cut from sheep which are very dirty. But when his mother brought wool it is very clean. He asked his teacher how the wool become so clean? ​

Answer 1

• Different sheep breeds have different levels of grease. For example, a Gotland sheep fibre will feel cleaner without scouring than a Merino sheep fibre. Another way to clean wool fibres is to ferment them. This process uses the oils and sweat already present in the wool to ferment a soap.