Physical Metallurgy MCQ Questions and Answers | Metallurgical Engineering

A. silicon

B. carbon

C. phosphorous

D. chromium

A. Both 'a' and 'r' are true, but 'r' is not a correct reason for 'a'

B. Both 'a' and 'r' are false

C. 'a' is true but 'r' is false

D. Both 'a' and 'r' are true and 'r' is a correct reason for 'a'

A. 72

B. 124

C. 248

D. 496

A. dislocations in the matrix

B. grain boundary energy

C. residual strains in different grains

D. stacking fault energy

A. P-1, Q-2, R-3, S-4

B. P-1, Q-3, R-2, S-4

C. P-4, Q-3, R-2, S-1

D. P-2, Q-1, R-4, S-3

A. 0.05

B. 0.15

C. 0.35

D. 0.55

A. The slope of the line is equal to the enthalpy change at standard state, which is approximately zero is this case

B. The slope of the line is equal to the entropy change at standard state, which is approximately zero in the case

C. CO₂ shows non-ideal behaviour

D. CO₂ is a gaseous oxide

A. P-1, Q-3, R-4, S-2

B. P-4, Q-3, R-2, S-1

C. P-1, Q-3, R-2, S-4

D. P-1, Q-2, R-3, S-4

A. alloy content

B. grain size

C. amount of carbon present

D. amount of cold work

A. SαΔT

B. SαΔT²

C. SαΔT^-1

D. $$S\alpha \Delta {T^{ - \frac{1}{2}}}$$