Monday, 23 May 2011

Fibre to Fabric. : Lesson 3 | CBSE - NCERT Class VI ( 6th) Science

Exercises : Questions & Answers       
1.Question.Classify following fibers as natural or synthetic:
Answer.   Natural               Synthetic
                Wool                   Nylon
                Cotton                 Polyester


  2.Question state whether the following statements  are True or False:

         (a) Yarn is made of fibers.(True)
        (b) Spinning is a process of making fibers.(False)
        (c) Jute is the outer covering of coconut.(false)
        (d) The process of removing seed  from cotton called ginning.(True)
        (e) Weaving yarn makes a piece of fabric.(True)
        (f) Silk fiber is obtained from the stem of a plant.(False)
        (g) Polyester is a natural fiber.(False)

3.Question. fill in the blanks:

(a) Plant fibers are obtained from cotton and jute.
(b) Animals fibers are  silk and wool.    

4.Question. From which parts of the cotton and jute are obtained?
Answer.(1) Cotton: From fruit of the cotton plant.
             (2) Jute:  From stem of jute plant.

5.Question.Name two items that are made from coconut fiber ?
Answer.(1) Bags. (2) Rope.

6. Question.Explain the process  of making yarn from fiber ?
answer. The process of making yarn from fiber is called spinning. In this process,fibers from a mass of cotton wool are drawn out and twisted. this brings the fibers together to from a Yarn.