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Synthetic Fibres and Plastics (Set - III)

Synthetic Fibres and Plastics � III

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which among the following can occur naturally and synthetically also?

  1. Polyester
  2. Rayon
  3. Polymer
  4. Sucrose
Question 2 Multiple Choice (Single Answer)

Why would you select nylon fibre to make swimwears?

  1. Because it possesses dip and dry property
  2. Because it is stronger than steel wire
  3. Because it is warm
  4. Because it can be dyed with various colours
Question 3 Multiple Choice (Single Answer)

Why is nylon used for making parachutes and ropes for rock climbing?

  1. <font size="2">I</font>t is lustrous.
  2. <font size="2">I</font>t is easy to wash.
  3. <font size="2">I</font>t is stronger than steel wire.
  4. It possesses dip and dry property.
Question 4 Multiple Choice (Single Answer)

Why are handles of screwdrivers and testers made of plastic?

  1. Because plastics have good tensile strength
  2. Because plastics are bad conductors of electricity
  3. Because plastics are good conductor of heat and electricity
  4. Because plastics are flexible
Question 5 Multiple Choice (Single Answer)

Which of the following properties make thermosetting plastics differ from thermoplastics?

  1. Thermoplastics can be deformed easily, but thermosetting cannot.
  2. Thermoplastics have higher tensile strength than thermosetting plastics.
  3. Thermoplastics are more flexible than thermosetting plastics.
  4. Thermoplastics are more durable than thermosetting plastics.
Question 6 Multiple Choice (Single Answer)

Bakelite is used for making electrical switches and handles of various utensils because

  1. it is a good conductor of heat and poor conductor of electricity
  2. it is a poor conductor of heat and good conductor of electricity
  3. it is a good conductor of both heat and electricity
  4. it is a poor conductor of both heat and electricity
Question 7 Multiple Choice (Single Answer)

Which of the following is not a polymer?

  1. Nylon
  2. Acrylic
  3. Amino acid
  4. Silk
Question 8 Multiple Choice (Single Answer)

Which of the following chemical compounds is a monomer unit of the polymer cellulose?

  1. Galactose
  2. Glucose
  3. Fructose
  4. Maltose
Question 9 Multiple Choice (Single Answer)

Which of the following are synthetic fibres?

  1. Silk, nylon, rayon and polyester
  2. Flax, polyester and nylon
  3. Nylon, polyester and rayon
  4. Wool, flax and jute
Question 10 Multiple Choice (Single Answer)

Shilpa wants to buy a dress made of silk but she does not have enough pocket money to buy it as silk fibre is very costly. Which among the following fibres would you suggest to her, that has properties similar to silk and is cheaper than silk?

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

Nisha has four dresses made up of different fabrics respectively: 'A' is made up of cotton, 'B' of silk, C of rayon and 'D' of polyester. Which dress should she wear during a journey so that it does not get wrinkled easily?

  1. Dress 'A'
  2. Dress 'B'
  3. Dress 'C'
  4. Dress 'D'
Question 12 Multiple Choice (Single Answer)

"Plastic articles are available in all possible shapes and sizes". Which among the following properties of plastics justifies the above statement?

  1. They can be recycled easily.
  2. They are easily mouldable.
  3. They can be reused.
  4. They can be rolled into sheets.
Question 13 Multiple Choice (Single Answer)

Which of the following statements is incorrect about plastics?

  1. They are used in cars and aircrafts as they are lighter than metals.
  2. They do not react with water and air when exposed to moisture.
  3. They are used to make electrical equipments as they conduct electricity.
  4. They are used to store chemicals as they are non-reactive.
Question 14 Multiple Choice (Single Answer)

It is advised not to burn plastic materials because

  1. they stick to the ground and do not burn completely
  2. they release poisonous fumes
  3. they vigorously react on heating and cause accidental burns
  4. they decompose quickly
Question 15 Multiple Choice (Single Answer)

Which among the following statements are correct?

  1. Plastic takes several years to decompose.
  2. Use of bags made of Jute should be reduced.
  3. Plastic bags should not be thrown on roads but should be dumped under the ground.
  4. Burning of synthetic material is quite slow.
  1. Only 1 and 3
  2. Only 1 and 4
  3. Only 2 and 3
  4. Only 3 and 4
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