Match the following lists :
| List-I (Materials) | List-II (Modulus of elasticity) |
|---|---|
| P.Aluminium alloys | 1.190 |
| Q.Cast iron | 2.190 – 210 |
| R.Copper | 3.70 – 79 |
| S.Steel | 4.110 – 120 |
| T.Wrought iron | 5.83 – 170 |
Select the correct answer using the code given below :
- A2 3 4 5 1
- B3 4 5 1 2
- C4 5 1 2 3
- D3 5 4 2 1Correct
Solution
Concept
Modulus of elasticity of common materials (GPa)
Step-by-step solution
1. Aluminium alloys: 70–79 → 3. 2. Cast iron: 83–170 → 5. 3. Copper: 110–120 → 4. 4. Steel: 190–210 → 2. 5. Wrought iron: 190 → 1.
Explanation
Steel has the highest modulus, followed by wrought iron, copper, cast iron (wide range) and aluminium.
Why the other options are wrong
The other codes mismatch the ranges.
Shortcut
Steel 200, copper 115, aluminium 70 GPa.
Correct answer: D) 3 5 4 2 1