Metals and Alloys MCQs Quiz Multiple Choice Questions & Answers

1. % C in medium carbon steels ranges from ...............

1. 0.3 - 0.4
2. 0.3 - 0.5
3. 0.3 - 0.6
4. None

2. Stainless steel is so called because of its................

1. High strength
2. High corrosion resistance
3. High ductility
4. Brittleness

3. In white cast irons, carbon present as...................

1. Graphite flakes
2. Graphite nodules
3. Cementite
4. Carbon does not exist

4. Refractory metal

1. Ag
2. W
3. Pt
4. Ni

5. Not a noble meta

1. Cu
2. Ag
3. Au
4. Pt

6. Noble metal

1. Al
2. Ag
3. Mo
4. W

7. Usual casting method for making dental crowns

1. Sand casting
2. Die casting
3. Continuous casting
4. Investment casting

8. Prime structural disadvantage of P/M products

1. Low density
2. Porosity
3. High damping capacity
4. None

9. Not an important heat treatment process parameter

1. Heating rate
2. Temperature
3. Cooling rate
4. Atmosphere

10. Final structure of austempered steel

1. Pearlite
2. Ferrite + graphite
3. Bainite
4. Martensite