Science, asked by MariaIrfan, 8 months ago

A good material for making an umbrella should be... a) heavy and rough
b) light and waterproof
c) absorbent and shiny

Answers

Answered by sathyabhaskar
0

Answer:

Light and waterproof

Explanation:

Answered by qwsuccess
0

A good material for making an umbrella should be light and waterproof. (Option b)

  • Best umbrellas have rain and sun-resistant fabrics.
  • These are synthetic fibres like Polyester or Pongee.
  • The best material for umbrellas is Polyethylene Terephthalate (PET) which has low water absorption and minimal shrinkage.
  • It can be easily cleaned and dries quickly. It's smooth and light in weight.

 

Polyethylene Terephthalate:

  It is a polyester fibre which is also known as terylene or dacron. It is made using two monomers, terephthalic acid and ethylene glycol, by condensation polymerisation.

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