Science H.W (3/5/17)

Dear Learners,

Write the spellings three times in the NB which was given yesterday

and write the following answers in NB1

  1. What is a fibre?
  2. How are fibres classified? Give examples.
  3. Why is rayon called artificial silk?
  4. Name the raw materials used to make nylon and rayon.
  5. What is the full form of PET?
  6. Give two uses of nylon.
  7. Which fibre remains crisp and is easy to wash?
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