Q. 14.4( 75 Votes )
Classify the following fibres as natural or synthetic:
Nylon, wool, cotton, silk, polyester, jute
The fibers are classified in the following table:
The natural fibers are those which are obtained from the plants, animals or any other natural source.
The synthetic fibers are those which are man-made fibers.
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Some terms related to fabrics are jumbled up and given below. Write them in their correct form.
(d) BisrefNCERT - Science Exemplar
Once, Paheli visited a tailor shop and brought home some cutting of fabric to study their properties. She took two pieces and found that one of the pieces was shrinking when it burnt with a candle. However the other did not shrink on burning. Can you help her to find out which of the two was a cotton fabric and which a silk fabric?NCERT - Science Exemplar
Boojho with perfect eyesight was finding it difficult to pass a thread through the eye of a needle. What can be the possible reason for this?NCERT - Science Exemplar
The following is an answer given by Boojho to a question asked by his teacher-‘’Cotton, Wool, Silk, and Jute are classified as natural fibres whereas nylon and polyester are classified as synthetic fibres.’’
Can you tell what question the teacher has asked?NCERT - Science Exemplar
Boojho went to a cloth shop. There he found a fabric which was smooth to touch, had vibrant colour and shine. The fabric could beNCERT - Science Exemplar
Which of the following is not a natural fiber?NCERT - Science Exemplar
Which set of substances is not used for making fibers?NCERT - Science Exemplar
State whether the following statements are true or false:
a. Yarn is made from fibres.
b. Spinning is a process of making fibres.
c. Jute is the outer covering of coconut.
d. The process of removing seed from cotton is called ginning.
e. Weaving of yarn makes a piece of fabric.
f. Silk fibre is obtained from the stem of a plant.
g. Polyester is a natural fibre.NCERT Science
Fill in the blanks to complete the life story of cotton fibre.
My parents, cotton plants were grown in ……………. Soil and …………. Climate. The plants bore fruits called ……….. I, the cotton fibre was separated from seeds in threw cotton bolls by the process of ….. . other cotton fibers and myself were made into yarn by the process of …. . The yarn was …….. to give beautiful colours and then …. To get cotton fabric.NCERT - Science Exemplar