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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
Match List I with List II and select the correct answer using the codes given below the lists:
| List I (Minerals) | List II (Mining area) |
|---|---|
| I. Graphite | (A) Bellary |
| II. Lead | (B) Didwana |
| III. Salt | (C) Rampa |
| IV. Iron Ore | (D) Zawar |
Options:
A) I-C, II-D, III-B, IV-A
B) I-A, II-D, III-B, IV-C
C) I-C, II-A, III-D, IV-B
D) I-B, II-C, III-A, IV-D
Match List-I (Fertilizer Industry) with List-II (State) and select the correct answer using the codes given below the lists:
| List-I (Fertilizer Industry) | List-II (State) |
|---|---|
| A. Aluva | 1. Assam |
| B. Namrup | 2. Jharkhand |
| C. Nangal | 3. Kerala |
| D. Sindri | 4. Punjab |
Codes:
| A | B | C | D | |
|---|---|---|---|---|
| (a) | 2 | 1 | 4 | 3 |
| (b) | 2 | 4 | 1 | 3 |
| (c) | 3 | 1 | 4 | 2 |
| (d) | 3 | 4 | 1 | 2 |