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NCERT Solutions for Class 7 Science Chapter 3: Fibre to Fabric



In this page we have Class 7 Science Chapter 3: Fibre to Fabric Worksheet . Hope you like them and do not forget to like , social share and comment at the end of the page.
Question 1.
Fill in the blanks:
a) Angora wool is obtained from___________
b) Liama and Alpaca also yield_____________ and are found in___________________
c) The process of taking out threads from the cocoons for use as silk is called________________ the silk
d) Rampur bushair yield_________________________ fleece.
e) Lohi and Nali are breeds of_________________________________
f) The process of selecting parent sheep for obtaining special characteristics in their offspring’s is called_______________
 
Question 2
Choose the correct answer –
i. Silkworms secrete fibre made of
(a) fat
(b) cellulose
(c) protein
(d) nylon
 
ii. Which of the following makes silk fibres –
a) Larva                                  
b) Adult silk moth
c) Pupa                       
d) None of the above
 
iii. The most common variety of silk is –
a) Tussar silk                          
b) Kota silk
c) Mulberry silk                     
d) Mooga silk
 
iv. Pattanwadi is an Indian breed of sheep found in
a) Gujarat                               
b) Rajasthan
c) Haryana                             
d) Punjab
 
v. Sorter’s disease is caused by –
a) Bacteria                              
b) Fungus
c) Virus                                  
d) Protozoa
 
vi. Silk production involves the cultivation of –
a) Blackberry trees                 
b) Mulberry trees
c) gooseberry trees                 
d) Strawberry trees

Question 3.
Match the following:
1. Lohi
a. Rayon
2. Nali
b. For hosiery
3. Pattanwadi
c. Good quality wool
4. Bhakharwal
d. Carpet wool
5. Artificial silk
e. For woolen shawls
6. Marwari
f. Coarse wool

 
Question 4
Answer the following in brief:
a) The cut off ‘wool coat’ of a sheep (along with a thin layer of skin) is called.
b) What are silk fibres made up of?
c) Coarse wool is obtained from which breed of sheep and in which state of India it is found?
d) Name two fibres which are made up of protein?
 
Question 5
Explain why woolen garments keep us warm in winter?
 
Question 6
 Why shearing is done before winter season?
 
Question 7
 Why shearing does not hurt the sheep?
 
Question 8
 What are occupational hazards? Name one occupational hazard.
 
Question 9
 
 How will you distinguish between natural silk & Artificial silk?
 
Question 10.
Draw well labeled diagram of life history of silk moth in sequence.
 
Question 11.
Write short note on processing of silk.
 
Question 12.
Explain the steps involved in processing of wool.
 
Question 13
Jumbled Words
(a) TURECULRISE
(b) WILSMORK
(c) BELMURRY
(d) RINGLEE
(e) NOCOOC
 
Question 14
A, B, C and D are all various types of fibres.
The fibres A and B are animal fibres whereas is C and D are plants fibres. The yarn made from A is used for knitting seaters whereas the made from B is used for weaving saris. The fibres C is used for filling quilts. Whereas D is used in gunny bags.
Match the column
A
Jute
B
Wool
C
Silk
D
Cotton

 
Question 14
Crossword Puzzle

Across
1. It is a bacterium which causes a fatal blood disease called sorter’s disease.
3. The rearing of silkworms for obtaining silk is called
6. Pattanwadi breed of sheep’s are found in ______
Down
2. The process of taking out threads from the cocoon for use as silk is called ______ the silk.
3. they are caterpillars of silk moth
4. it is the process of removing thin layer of body
5. Silk Fibres are made of _____

Reference Books for class 7 Science

Given below are the links of some of the reference books for class 7 math.

  1. Science for Class 7 by Lakhmir Singh
  2. Science Foundation Course For JEE/NEET/NSO/Olympiad - Class 7
  3. CBSE All In One Science Class 7 by Arihant Experts (Author)
  4. IIT Foundation Physics, Chemistry & Maths for Class 7

You can use above books for extra knowledge and practicing different questions.



Class 7 Maths Class 7 Science





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