Material Science Objective Questions
These Material Science Objective Questions are very important for the competitive exams like SSC JE, RRB, GATE, ISRO, DRDO, and all other competitive exams.
All these Material Science Objective Questions are from the previous years’ papers of one of the exams mentioned before.
Read More- Fluid Mechanics: Objective Questions
1. Eutectoid reaction occurs at-
A. 114 °C
B. 600 °C
C. 727 °C
D. 1493 °C
2. Machines tool guide-ways are usually hardness by-
A. Mar-tempering
B. Flame hardening
C. vacuum hardening
D. induction hardening
3. 18/8 stainless steel contains-
A. 18% nickel & 8% chromium
B. 18% chromium & 8% nickel
C. 18% tungsten & 8% chromium
D. 18% stainless & 8% chromium
4. Which one of the following features improve the fatigue strength of a metallic material-
A. Increasing the temperature
B. Scratching the surface
C. Over stressing
D. Under stressing
5. Gibbs phase rule is given by-
A. F = C + P
B. F = C – P + 2
C. F = C + P – 2
D. F = C – P – 2