NCERT Class 7 Science Third Chapter Fibre to Fabric Exercise Solutions

Fibre to Fabric

Inside question and Answers.

(1) From where mohair is obtained?

Ans:- Angara goats.

(2) In where Llama and Alpaca found?

Ans:-  South America

(3) In which State of India Lohi breed of sheep are found?

Ans:-  Rajasthan, Punjab

(4) In which state of India Rampur bushair breed of sheep are found?

Ans:- Uttar Pradesh, Himachal Pradesh.

(5) In which state of India Nali breed of sheep are found?

Ans:- Rajasthan, Haryana, Punjab.

(6) In which state of India Bakharwal bread of ship are found.

Ans:- Jammu and Kashmir.

(7) In which State of India Marwari breed of ship are found?

Ans:-  Gujarat.

(8) In Which State of India Patanmadi breed of ship are found?

Ans:- Gujarat.

(9) What is called shearing?

Ans:- The fleece of the sheep along with a thin layer  of skin is removed  from its  body. This process is called shearing.

(10) What is called Scouring?

Ans:- The sheared skin with hair is thoroughly mashed in tanks to remove grease, dust and dirt. This is called recouring.

(11) What is called Sericulture?

Ans:- The rearing of silkworms for obtaining silk is called sericulture.

(12) What is called caterpillars or silkworms.

Ans:- The female silk math lags eggs from which hatch larvae which are called caterpillars or silkworms.

(13) Name the different types of silk.

Ans:- Mulberry silk, Tassar silk, Mooga silk etc.

(14) Define reeling the silk.

Ans:- The Process of taking out threads from the cocoon for use as silk is called reeling the silk.

Exercises questions and Answers

(4) What is meant by the following terms:-

(i) Rearing: The Process of grazing, breeding and caring of ships for producing wool is called Rearing.

(ii) Shearing: Mentioned in inside questions and Answers.

(iii) Sericulture:- Mentioned in inside questions and Answers.

(iv) Sericulture:- Mentioned in inside questions and Answers.

(v) Shearing, Scouring, Sorting, Cleaning of burns, Dyeing, Rolling.

(6) Make sketches of the two stages in the life history of the silk moth which
are directly related to the production of silk.

(7) Out of the following, which are the two terms related to silk production?

(i) Sericulture (ii) Mori culture.

(8) Match the words of Column I with those given in Column II:

(9) Given below is a crossword puzzle based on this lesson. Use hints to fill in the blank spaces with letters that complete the words. Down Across

(D) 1 : Thorough washing                                             (A) 1 : Keeps warm

2 : Animal fibre                                                                     2 : Its leaves are eaten by silkworms

3 : Long thread like structure                                             3 : Hatches from egg of moth