MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Materials Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In which of the following the alloy is rapidly cooled? |
| A. | Anealing |
| B. | Coring |
| C. | Hot working |
| D. | Cold working |
| Answer» C. Hot working | |
| 2. |
In a copper nickel system the tensile strength increases with an increase in the percentage of nickel in the alloy. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
The copper-nickel system is an example of solid solution hardening. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
An alloy 30 wt% Ni- 70wt % Cu at 1095 °C (2000 °F) will lie in which state? |
| A. | Solid state |
| B. | Liquid state |
| C. | Mixture of solid and liquid state |
| D. | α state |
| Answer» E. | |
| 5. |
An alloy 30 wt% Ni- 70wt % Cu at 1315 °C (2400 °F) will lie in which state? |
| A. | Solid state |
| B. | Liquid state |
| C. | Mixture of solid and liquid state |
| D. | α state |
| Answer» C. Mixture of solid and liquid state | |
| 6. |
The number of components are 2, the number of phases is 1 and degrees of freedom are 2. Then which of the following equilibrium is it? |
| A. | Invariant |
| B. | Univariant |
| C. | Bivariant |
| D. | Trivariant |
| Answer» D. Trivariant | |
| 7. |
The number of components are 2, the number of phases are 2 and degrees of freedom are 1. Then which of the following equilibrium is it? |
| A. | Invariant |
| B. | Univariant |
| C. | Bivariant |
| D. | Trivariant |
| Answer» C. Bivariant | |
| 8. |
IN_A_COPPER_NICKEL_SYSTEM_THE_TENSILE_STRENGTH_INCREASES_WITH_AN_INCREASE_IN_THE_PERCENTAGE_OF_NICKEL_IN_THE_ALLOY.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
In_which_of_the_following_the_alloy_is_rapidly_cooled?$ |
| A. | Anealing |
| B. | Coring |
| C. | Hot working |
| D. | Cold working |
| Answer» C. Hot working | |
| 10. |
The copper-nickel system is an example of solid solution hardening? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
An alloy 30 wt% Ni- 70wt % Cu at 1315 °C (2400 °F) will lie in which state?$ |
| A. | Solid state |
| B. | Liquid state |
| C. | Mixture of solid and liquid state |
| D. | α state |
| Answer» C. Mixture of solid and liquid state | |
| 12. |
The number of components are 2, the number of phases are 3 and degrees of freedom are 0. Then which of the following equilibrium is it? |
| A. | Invariant |
| B. | Univariant |
| C. | Bivariant |
| D. | Trivariant |
| Answer» B. Univariant | |
| 13. |
In a binary isomorphous system which of the following is true? |
| A. | The two metals are completely miscible in each other in liquid as well as solid form |
| B. | The two metals are completely immiscible in each other in liquid as well as solid form |
| C. | The two metals are completely miscible in each other in liquid form only |
| D. | The two metals are completely miscible in each other in solid form only |
| Answer» B. The two metals are completely immiscible in each other in liquid as well as solid form | |
| 14. |
How many components are present in unary phase system? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |