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Synthetic Fibres and Plastics Test - 13

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Synthetic Fibres and Plastics Test - 13
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  • Question 1
    1 / -0
    Why the waste created by plastics is not friendly with environment?
    Solution
    Plastics are not environment friendly because it is non-biodegradable and on burning them leaves poisonous gases.

    Option D is correct.
  • Question 2
    1 / -0
    Which of the following is a true statement?
    Solution
    Rayon is made from cellulose.
  • Question 3
    1 / -0
    Which of the following do not contain polyester fabric?
    Solution
    Terrywool, Terrycot and Terylene all contain polyester.

    Orlon is a polymer of vinyl cyanide. It is made by the addition of acrylonitrile molecules. It is a brand of the synthetic, acrylic textile fibre of the lightweight and wrinkle-resistant fabric.

    Option D is correct.
  • Question 4
    1 / -0
    Like synthetic fibres, plastic is also a :
    Solution
    Plastic is also a polymer like the synthetic fibre. It is the chain of small units joined together.
  • Question 5
    1 / -0
    Which of the following is known as regenerated fibre?
    Solution

    Rayon is known as regenerated fibre because it is manufactured from natural resources like cellulose present in wood pulp and short fibres.

  • Question 6
    1 / -0
    Most of the thermoplastic :
    Solution
    A thermoplastic is the material which become soft on heating and hard on cooling several times.
    Therefore, they can be recycled.

  • Question 7
    1 / -0
    These clothes are used best in summer:
    Solution
    Cotton is a natural fiber and it has the tendency to absorb sweat. Also, it's a breathing fabric, so it allows air to pass through our clothes keeping our body cool.  Therefore, cotton is the best fabric to use in summer.
  • Question 8
    1 / -0
    The first man - made polymer is :
    Solution
    Bakelite is a man made polymer by polymerization of phenol and formaldehyde. First Navoloc is formed and then Bakelite is formed.
  • Question 9
    1 / -0
    All are natural fibres except
    Solution
    Nylon is a synthetic fibre.
  • Question 10
    1 / -0
    The fibre used in parachute making and ropes for rope climbing is__________.
    Solution
    Nylon fiber is so strong and elastic that it is  used for making parachutes and ropes for rock climbing.
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