The plastic which cannot be recycled is
  • jute
  • rayon
  • petrochemicals
  • bakelite
Bakelite is an example of
  • fibre
  • elastomer
  • nylon
  • thermosetting polymer
Which term is used for polymers made up of a large number of glucose units?
  • Protein
  • Fructose
  • Cellulose
  • Polyester
Which of the following is non-biodegradable?
  • Paper
  • Cotton cloth
  • Wood
  • Plastic
Which of the following is natural fibre obtained from plants?
  • Cotton
  • Wool
  • Rayon
  • Ketone
which synthetic fibre has a wool like feeling
  • Acrylic
  • Polyester
  • PET
  • Rayon
The most suitable material for the preparation of handles of cooking utensils is
  • Polythene
  • PVC
  • Nylon
  • Bakelite
Electrical switches are made up of the following materials
  • PVC
  • Bakelite
  • Teflon
  • Melamine
Which one of these is not a synthetic fibre
  • Nylon
  • Acrylic
  • Wool
  • Rayon
Which of the following is not a common property of plastics?
  • Good conductor of electricity
  • Light in weight
  • Non-reactive
  • Durable
Which of the following groups contain all synthetic substances?
  • Nylon, Terylene, Wool
  • PVC, Polythene, Bakelite
  • Cotton, Polycot, Rayon
  • Acrylic, Silk, Wool
Which of the following is a source of rayon?
  • Wool
  • PET
  • Wood pulp
  • Silk
Match the column
class8-science-chapter-3-mcq-2.png
  • p -> iii, q -> iv, r -> ii , s ->i
  • p -> i, q -> ii, r -> iv, s ->iii
  • p -> iii, q -> i, r -> ii , s ->iv
  • p -> iii, q -> iv, r -> i , s ->ii
What is the chemical name for Cotton?
  • cellulose
  • Sucrose
  • Starch
  • None of these
The nylon is first prepared in
  • 1951
  • 1931
  • 1941
  • 1961
Match the column
class8-science-chapter-3-mcq-1.png
  • p -> ii, q -> i, r -> ii , s ->i
  • p -> i, q -> ii, r -> i , s ->ii
  • p -> i, q -> i, r -> ii , s ->ii
  • p -> ii, q -> ii, r -> i , s ->i
Polymers are
  • Macromolecules
  • Micromolecules
  • Sub-Micromolecules
  • None of the above
which of these is correct
  • PVC stands for polyvinyl chromium
  • A plastic used for making crockery is melamine
  • A fibre similar to wool is rayon
  • 4 R’s stands for Reduce, Reuse, Recycle, Reactivate
Synthetic fibers are
  • durable
  • wrinkle-free
  • economical
  • all of these
Which of these is biodegradable?
  • Tin
  • paper
  • metal can
  • plastic pen
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