Question

Which of the following is used for making parachutes and stockings?
(A) Cotton
(B) Nylon
(C) Wool
(D) Bakelite

Answer 1

Hint: The polymer which is used in the manufacturing of parachutes and stockings is a condensation polymer. It can be obtained by the polymerization of the monomer caprolactam.

Complete step by step solution:
Let’s know which material is used to make parachutes and stockings.
-For the parachutes, the material used needs to be strong enough that it can withstand a certain amount of weight or force per area. It also needs that over time its quality remains the same and it does not get corroded.
-We are also given some polymers in the options. So, we now know that a polymer is a building block of these two.
-Wool is a textile fibre which is obtained from animals like sheep. It is used for the production of blankets and clothes. It also finds some industrial use as well. However, it is not strong enough to be used in the manufacture of parachutes.
-Bakelite is a strong polymer. It is used in the manufacture of buckets and insulating materials. Bakelite is not flexible. So, it cannot be used in the manufacture of parachutes.
-Cotton is used in the manufacture of clothes but it is not strong enough. So, it is not used in the manufacture of parachutes and stockings.
-So, nylon is a polymer which is strong as well as flexible. So, it is used in the manufacture of parachutes. Material for stocking also needs the same characteristics. So, we can use nylon for the manufacture of stockings as well.

So, the correct answer is (B).

Note: Nylon polymer is also used in the manufacture of carpets and clothes. The resins of nylon are widely used in the automobile industry. It is also used in the filaments of toothbrushes.