8th quiz synthetic fibres and plastics

Which of the following option is incorrect statement about rayon?

answer choices

• It is highly absorbent and soft

• .it is obtained from wood pulp

• it is mixed with cotton to make bedsheets

   

• it is a natural fibre

   

Identify ALL the advantages of plastics.

• Combustible

• Light weight

• Produce toxic fumes

• Non-renewable

• Corrosion resistant

Which is a popular type of polyester

(a)  

Which synthetic fibre has high tensile strength?

• Spandex

• Celluloid

• Nylon

• Jute

What are synthetic fibres?

• Naturally obtained fibres from Plants and Animals.

• Man-made fibres that are obtained from petrochemicals and synthesized in a laboratory by humans.

• They are obtained from both natural elements and synthesized in laboratory.

• All of the above

Main source of raw material for producing synthetic fibre is :

• CNG

• LPG

• Refined oil.

• Petroleum

What is the correct meaning of Recover in 5R principle?

• Recovering the landfill areas

• Recovering the garbage

• Recovering the energy used in manufacture of plastic items

• None of the above

Which of the following material is a mixture of two fibres?

• jute 

• polywool

• polyester

• nylon

In which year was nylon fibre made

• 1942

• 1957

• 1921

• 1931

Polythene and PVC are examples of

• Bio degradable substance

• Thermosetting plastics

• Thermoplastics

• Rayon