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Short questions for synthetic_fibres


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Short questions

Question 1

Name any two blended fibres?

Answer

  Terry cot (terrylene+ cotton)

          Terry cot ( ferrylene+ wool)

Question 2

 Why is rayon called a regenerated fibres?

Answer

Rayon is called regenerated fibers because the original raw material cellulose is broken down and then reformed.

Question 3

Why is nylon considered to be a good material for making fishing nets?

Answer

Being a strong and lightweight material, it is used for making fishing net.

 

Question 4

Why electric plugs and switches are made of plastic?

Answer

Plastics are poor conductor of heat and electricity so electric plug and switches are made of plastic

 

Question 5

Why are plastic bottles commonly used to store chemicals in a chemistry laboratory?

Answer

Plastics have no reaction with water and air. They are non- reactive and do not corrode easily so they are used to store chemicals in chemistry laboratory.

 

Question 6

What can be used as a substitute for wool? Why?

Answer

Acrylic can be used as a substitute for wool because it is a lightweight, soft and warm synthetic fiber which is wrinkle- resistant, cheaper than wool and resistant to moths and chemicals.

 

Question 7

Distinguish between natural and synthetic fibers?

Answer

Natural fibers come from plants and animals such as cotton, jute etc.

Synthetic fibers are made from chemicals which come from wood, coal and petroleum such as rayon, nylon etc.

 

Question 8

Why nylon is used for making socks?

Answer

Nylon fiber show good frictional resistance. It is elastic in nature and highly durable so it is used for making socks.

 

Question 9

Why people prefer wearing cotton clothes over synthetic during summer?

Answer

Synthetic fibers cannot absorb moisture. This makes them unsuitable to be worn during summer when our body sweats.

 

Question 10

Why Polyester clothes should be avoided in kitchen?

Answer

Polyester is highly flammable so they should be avoided in kitchen.

 

 



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