Q13
Match the basic strengthening mechanisms in the following materials. Group-I Group-II P. 60 : 40 brass is stronger than 70 : 30 brass. 1. Case hardening Q. An automobile gear made from 0.6% C steel and quenched in water from a temperature of 850°C. 2. Strain hardening R. Tungsten filament drawn at a temperature of 400°C. 3. Martensitic strengthening S. A ball bearing heated in furnace in ammonia atmosphere. 4. Second phase strengthening
Match the basic strengthening mechanisms in the following materials.
| Group-I | Group-II |
| P. 60 : 40 brass is stronger than 70 : 30 brass. | 1. Case hardening |
| Q. An automobile gear made from 0.6% C steel and quenched in water from a temperature of 850°C. | 2. Strain hardening |
| R. Tungsten filament drawn at a temperature of 400°C. | 3. Martensitic strengthening |
| S. A ball bearing heated in furnace in ammonia atmosphere. | 4. Second phase strengthening |
A.
P-4, Q-3, R-2, S-1
AnswerB.
P-1, Q-2, R-3, S-4
C.
P-4, Q-3, R-1, S-2
D.
P-3, Q-4, R-2, S-1
Answer: Option A
Solution
Answer: Option A
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