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1. Synthetic Fibres and Plastics(8)

1. Synthetic Fibres and Plastics(8)

20 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

PVC is

  1. paravinyl chloride
  2. paravinyl carbide
  3. polyvinyl carbide
  4. polyvinyl chloride
Question 2 Multiple Choice (Single Answer)

It is dangerous to burn plastics because

  1. fumes, if inhaled, cause immediate death
  2. there is an increase in the number of insects
  3. fumes released can cause cancer
  4. it reduces soil fertility
Question 3 Multiple Choice (Single Answer)

Fibres are :

  1. artificial
  2. natural
  3. synthetic
  4. all are correct
Question 4 Multiple Choice (Single Answer)

Necklace : bead :: synthetic fibre : _____

  1. tetramer
  2. monomer
  3. dimer
  4. polymer
Question 5 Multiple Choice (Single Answer)

A non biodegradable fibre will cause :

  1. cleaner air
  2. high productivity
  3. pollution
  4. better environment
Question 6 Multiple Choice (Single Answer)
  1. Which of the following is a thermosetting plastic ?
  1. PTFE
  2. Polyester
  3. Nylon
  4. Melamin
Question 7 Multiple Choice (Single Answer)
  1. Which one is artificial silk?
  1. Nylon
  2. Fibroin
  3. Rayon
  4. Teflon
Question 8 Multiple Choice (Single Answer)
  1. Statement incorrect for synthetic fibres is/are:
  1. long lasting
  2. all the above
  3. non-biodegradable
  4. very expensive
Question 9 Multiple Choice (Single Answer)
  1. Nylon absorbs very little water hence it is most suitable for making :
  1. fishing net
  2. tyre cords
  3. parachute
  4. all of these
Question 10 Multiple Choice (Single Answer)

Best alternative to wool is :

  1. Bakelite
  2. Rayon
  3. Acrylic
  4. Nylon
Question 11 Multiple Choice (Single Answer)

Which of the following set of features belong to thermoplastics ?

  1. hard and strong
  2. hard and less brittle
  3. soft and less brittle
  4. soft and brittle
Question 12 Multiple Choice (Single Answer)

A regenerated synthetic fibre is the one which is made up of

  1. recycled waste fibres
  2. dead and decaying organisms
  3. chemicals only
  4. natural materials
Question 13 Multiple Choice (Single Answer)

Nylon is a :

  1. natural fibre
  2. regenerated fibre
  3. both true synthetic fibre & regenerated fibre
  4. true synthetic fibre
Question 14 Multiple Choice (Single Answer)

All kinds of fibres are :

  1. polymers
  2. pentamers
  3. monomers
  4. dimers
Question 15 Multiple Choice (Single Answer)

Bakelite do not melt on heating because such :

  1. polymers are attached by strong linear chains
  2. polymers are poor conductors of heat
  3. polymers are strong and inexpensive
  4. polymers are joined by strong cross links
Question 16 Multiple Choice (Single Answer)

_____ is blended with wool for making carpets.

  1. Nylon
  2. Polystyrene
  3. Polyester
  4. Rayon
Question 17 Multiple Choice (Single Answer)

Plastics are classified as thermoplastic and thermosetting plastic based on their behaviour :

  1. on ironing
  2. on passing electricity
  3. on cooling
  4. on heating
Question 18 Multiple Choice (Single Answer)

Polythene is obtained by polymerization of :

  1. methylene monomers
  2. phenol & formaldehyde monomers
  3. propylene monomers
  4. ethylene monomers
Question 19 Multiple Choice (Single Answer)

To overcome the disadvantages of synthetic fibres, they are

  1. purified and dyed
  2. mixed with plastics
  3. mixed with petroleum products and purified
  4. they are mixed with natural fibres
Question 20 Multiple Choice (Single Answer)

Nylon does not contain :

  1. cellulose
  2. water
  3. air
  4. coal
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