Question

The fibre used in parachute making and ropes for rope climbing is _ _ _ _ _
A. Nylon
B. Rayon
C. Teflon
D. Jute

Answer 1

Hint: The fibre which is used for making parachutes and ropes for rope climbing is very strong and elastic as it is needed in some of the life-saving tasks. One of the options is very strong as well elastic in nature which helps in intense challenges.

Complete answer:
A. Nylon:
It is the strongest and has the most elastic nature among all the options. Which helps it in making toughest ropes. It is generally used for absorbing shock loads, such as towing because it has the ability to return back to original length just after being stretched. Also the abrasion resistance is good and which can last upto a very longer time than natural fibres.
So the answer is Nylon.
B. Rayon:
It is a natural-based material which is extracted from the cellulose which is found in the wood pulp or cotton. Cost of Rayon is quite low and it is a very convenient fibre to work with and changes itself for multiple uses. There are few grades of Rayon which are used for different purposes but it is not used for rope making and parachute making.
So Rayon is incorrect.
C. Teflon:
It is the registered name of the mostly used plastic material polytetrafluoroethylene(PTFE). It is one of plastics which is known as fluoropolymers. A polymer is formed by chemically reacting, which combines particles into groups of large molecules which are repeating.
So Teflon is also incorrect.
D. Jute:
It is the plant name or burlap, hessian or gunny cloth is created by this fibre, It is one of the affordable natural fibres, and second ranked only to cotton in the amount created and diversity of uses. It is not used for rope making as it is not that tougher.
So Jute is again incorrect.

Therefore, Option (A) is correct.

Note:
Don’t get confused by the names as they look familiar in working but totally different in their uses. One is very strong and elastic in nature, other ones have different roles and uses as here the strongest and most elastic nature is required so depending on nature, choose wisely.