CBSE Questions for Class 8 Chemistry Synthetic Fibres And Plastics Quiz 2 - MCQExams.com

Disposal of plastic is a major problem because :
  • It is non biodegradable
  • It is biodegradable
  • It takes several years to decompose
  • (1) & (3) both
Which of the following statement is true about PVC (polyvinyl chloride) and polythene?
  • They are thermoplastics
  • They are thermosetting plastics
  • They are examples of natural substances
  • They are natural fibres
Which of the following do not contain polyester fabric?
  • Terrywool
  • Terrycot
  • Terylene
  • Orlon
Which of the following is a true statement?
  • Plastic is soluble in water
  • Plastic is not a polymer
  • Rayon is made from cellulose
  • All plastics are fire-resistant
Like synthetic fibres, plastic is also a :
  • polymer
  • polyester
  • natural
  • None of the above
Polyester is a natural fiber.
  • True
  • False
Which of the following is known as regenerated fibre?
  • Nylon - 66
  • Terylene
  • Nylon - 6
  • Rayon
Most of the thermoplastic :
  • can be recycled
  • cannot be recycled
  • cannot be heated
  • none of the above
These clothes are used best in summer:
  • wool
  • silk
  • cotton
  • nylon
The first man - made polymer is :
  • PVC
  • Teflon
  • Bakelite
  • Nylon
All are natural fibres except
  • Silk
  • Cotton
  • Nylon
  • Wool
State whether true or false :

Bakelite is the first synthetic thermosetting plastics.
  • True
  • False
Which one of the following is a thermosetting plastic?
  • Melamine
  • Polythene
  • PVC
  • Nylon
Polymeric organic materials are called:
  • elastics
  • plastics
  • polythenes
  • None of these
To which of the following does the 4R principle apply the most?
  • Organic garbage
  • Natural fibres
  • Manures
  • Plastics
The material similar to silk in appearance is :
  • nylon
  • rayon
  • polyester
  • terylene
The material which is commonly used for making kitchen containers is :
  • PVC
  • Acrylic
  • Teflon
  • PET
The use of plastic material PET is in:
  • utensils
  • bottles
  • films
  • All of the above
The most suitable material for the preparation of handles of cooking utensils is :
  • polythene
  • PVC
  • nylon
  • bakelite
Which of the following is not a common property of plastics?
  • Non-reactive
  • Light in weight
  • Durable
  • Good conductor of electricity
Cooking pans have plastic handles.
  • True
  • False
Statement: Teflon doesn't stick to oil and water and can be used in non-sticky pans and other cookware.
  • True
  • False
State whether true or false:

Cotton and wool are obtained from the cotton plants and sheep respectively.
  • True
  • False
Plastics are capable of molding and casting into various shapes and sizes of plastic.
  • True
  • False
Polystyrene and PVC are thermoplastics.
  • True
  • False
Acrylic is used for making sweaters, shawls and blankets.
  • True
  • False
Which of the following is used for making parachutes and stockings?
  • Cotton
  • Nylon
  • Wool
  • Bakelite
Teflon is a special plastic on which oil and water do not stick.
  • True
  • False
Nylon has high elasticity and tensile strength.
  • True
  • False
Statement: Plastics which get deformed on heating and can be bent easily are known as thermoplastics.

State whether the given statement is true or false.
  • True
  • False
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