Question

The sheared skin with hair is thoroughly washed in tanks to remove grease, dust and dirt. This is called-
A) Cleansing
B) Rearing
C) Shearing
 D) Scouring

Answer 1

Hint: The removal of grease, dust and dirt from sheared skin with hair is done in tanks (by machine) so the process cannot be a simple cleansing.

Complete step by step answer:
The removal of grease, dust and dirt from sheared skin with hair in tanks is called scouring. It is the second step of obtaining fiber. It is used to obtain wool from sheep. It is done because the animal’s skin is exposed to sunlight and pollution so that the wool obtained can be used for commercial purposes. This process cleans the fleece or hair properly.

Hence the correct answer is D.
Additional Information:
The process in which useful animals are kept in a healthy environment, bred , fed and given good medical care is known as rearing. Generally livestock like cows, buffaloes, goats, sheep and hens are reared for commercial purposes. Different animals are reared for different purposes.
Shearing is the process in which the fleece of sheep is removed along with a thin layer of skin. It is generally done by machines.
Cleansing means washing large particles and sweat and it is generally done by hands not machines.

Note:
The wool is generally obtained from sheep, goat, yak, camel, llama and alpaca. They have thick coats of hair on their body which keeps them warm as it traps a lot of air. The hair is removed only once a year so that the animals can grow them easily by the time winter comes. Shearing is the first process of removing wool and scouring is the second step.