UPSC Prelims 2023 · Question 83 of 97

UPSC Prelims 2023 question on Carbon Fibres

Consider the following statements:

1. Carbon fibres are used in the manufacture of components used in automobiles and aircrafts.
2. Carbon fibres once used cannot be recycled.

Which of the statements given above is/are correct?

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2
Show answer

Answer: A. 1 only

Verdict

Only statement 1 is correct → Option (a) 1 only.

Statement by statement

Statement 1 – CORRECT: Carbon fibers can be defined as fibers with a carbon content of 90% or above. It is made up of long, thin strands of carbon that are bonded together. Carbon fiber is very strong and lightweight, and is also corrosion-resistant with good electrical conductivity. This makes it ideal for use in a variety of applications, including aircraft manufacturing and automobiles.

Statement 2 – INCORRECT: Carbon fibre is not currently biodegradable. Because carbon fibre is a composite built to hold its strength and shape, it is difficult to recycle — however, this does not mean it 'cannot be recycled'. Research is ongoing into recycling methods for carbon fibre composites. The statement that it 'cannot be recycled' is too absolute.

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