NCERT Class 7 Science Chapter 3 Fibre to Fabric Extra Questions and Answers
Class 7 Science Chapter 3 Extra Questions and Answers – Fibre to Fabric. Here in this Page Class VII Students can Learn Extra Questions & Answer 6th Chapter Science fully Inside.
We Provided Here Fibre to Fabric Science Chapter 3 Long Answer Type Question, Very Short Type Questions (VSA) / MCQ Type Questions, Short Type Questions (SA).
Class 7 Science Chapter 3 Extra Question with Answer – Fibre to Fabric
Science Chapter 3 Fibre to Fabric Class 7 Inside 5 Marks, 3 marks, 2 Marks & And 1 Marks Important Questions and Answers.
1) Fill in the blanks:
a) Silk fibers are made of a ___.(Protein)
b) ___ is obtained from the fleece of sheep or yak.(Wool)
c) The small fluffy fibers, are called ___.(Burrs)
d) The ___ fibers are made into wool for sweaters. (Longer)
2) Multiple choice questions:
a) Carpet wool is obtained from the fleece of ____ breed of sheep?
a) Lohi b) Patanwadi c) Nali
Ans. c) Nali
b) ___breed of sheep have brown fleece?
a) Marwari b) Rampur bushair c) Bakharwal
Ans. b) Rampur bushair
c) The ___ fibers are spun and woven into woolen cloth?
a) Shorter b) Longer
Ans. a) Shorter
d) The cleaning of sheared skin of the sheep is called ___?
a) Scouring b) Sorting
Ans. a) Scouring
3) Answer the following questions:
a) Where does the silk fiber come from? Name the most common silk moth.
Ans. Silk fiberscome from cocoons of the silk moth.
The most common silk moth is mulberry silk moth.
b) Which breed of sheep the coarse wool is obtained from? Which states of India this breed is found?
Ans. Coarse wool is obtained from the fleece of Marwari sheep.
This breed is found in Gujrat.
c) Which state of India the patanwadi sheep is found? Write the use of the fleece of patanwadi sheep.
Ans. The patanwadi sheep is found in Gujrat.
The fleece of patanwadi sheep is used for hosiery.
d) What is sericulture? What is reeling?
Ans. The rearing of silkworms for obtaining silk is called sericulture.
The process of taking out threads from the cocoon for use as silk is called reeling.
4) Match the words of column I with those given in column II:
Column I Column II
a) Mulberry leaves 1) Caterpillarof silk moth
b) Nali sheep 2) Used for woolen shawls
c) Silkworm 3) Food of silkworm
d) Bakharwal sheep 4) Wool yielding animal
e) Goat 5) Found in Panjab
Ans. a) – 3), b) – 5), c) – 1), d) – 2), e) – 4)
Case Study Questions
5) The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing. Machines similar to those used by barbers are used to shave off hair. Usually, hair are removed during hot weather. This enables sheep to survive without their protective coat of hair. The hair provide woolen fibers. Woolen fibers are then processed to obtain woolen yarn.
a) What is shearing?
Ans. The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing.
b) The hair of sheep are removed during ____ weather. (Hot)
6) Mark your answers as per the given codes (Assertion Reason):
a) A: Yak is a wool yielding animal.
R: The fleece of yak is one of the source of wool.
I.) Both A and R are true and R is the correct explanation of A.
II.) Both A and R are true but R is not the correct explanation of A.
III.) A is true but R is false.
IV.) A is false but R is true.
V.) Both A and R are false.
Ans. I. Both A and R are true and R is the correct explanation of A.
b) A: Silk fibers are plant fibers.
R: Silk fiber is obtained from the cocoon of the silk moth.
I.) Both A and R are true and R is the correct explanation of A.
II.) Both A and R are true but R is not the correct explanation of A.
III.) A is true but R is false.
IV.) A is false but R is true.
V.) Both A and R are false.
Ans. IV. A is false but R is true.