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?
- A. 1 only
- B. 2 only
- C. Both 1 and 2
- D. Neither 1 nor 2
Answer: A
Explanation
Statement 1 is correct. Carbon fibres possess high strength-to-weight ratio, stiffness, and corrosion resistance, making them ideal for lightweight yet robust components in industries like aerospace and automotive. Statement 2 is incorrect. While carbon fibre composites are challenging to recycle due to their thermoset resin matrices and inability to be melted, various recycling technologies exist, including mechanical, thermal (pyrolysis), and chemical methods. These processes aim to recover the carbon fibres for reuse, though economic viability and widespread adoption remain challenges. This question tests knowledge of advanced materials, a recurring theme in UPSC Science & Technology.