Change set
Pick exam & year, then Go.
Question map
Directions: The following question is based on the matching table given below. Match List-I with List-II, List-III, and List-IV, and select the correct answer.
| List-I (Material) | List-II (Property) | List-III (Property/Composition) | List-IV (Property/Use) |
|---|---|---|---|
| A. Diamond | 1. Thermosetting polymer | I. Rigid structure | i. Non-conductor |
| B. Graphite | 2. Monomer | II. Sheet-like structure | ii. Ester |
| C. Rayon | 3. Soft | III. Cellulose | iii. Conductor of heat |
| D. Nylon | 4. Viscose process | IV. Soft on heating | iv. Ether |
| E. Carbon fibre | 5. Synthetic fibre | V. Unreactive | v. Silk-like thread |
| F. Polyvinyl chloride | 6. High strength | VI. Corrosion | vi. Spacecraft |
| G. Terylene | 7. Thermoplastic | VII. Melts instead of burning | ix. (Other Property) |
Which of the following combinations is correct?
Explanation
This question is based on a matching table from the chemistry and materials section of the NDA exam, which requires matching materials with their corresponding properties and applications. The correct sequence is found in Option A (E 6 I vi), which perfectly describes Carbon fibre.
- E (List-I): Carbon fibre
- 6 (List-II): High strength
- I (List-III): Rigid structure
- vi (List-IV): Spacecraft
Carbon fibres are advanced synthetic polymers composed of carbon atoms bonded together to form a long chain. They are characterized by their extremely high tensile strength-to-weight ratio and rigidity (stiffness). Because they are lightweight yet incredibly strong and rigid, carbon fibre reinforced composites are extensively used in aerospace engineering and spacecraft manufacturing.
SIMILAR QUESTIONS
2 Cross-Linked PYQs
UPSC repeats concepts across years. Login to see how this question connects to 2 others.
Login with Google