MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Advanced Powder Metallurgy Processing Techniques knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For which of the following conditions does the combustion proceeds at the highest velocity (where MPC1 and MPC2 are melting points of component 1 and 2 respectively)? |
| A. | MPC1 < Tad < MPC2 |
| B. | Tad > MPC1 and MPC2 |
| C. | Tad < MPC1 and MPC2 |
| D. | Tad = MPC1 and MPC2 |
| Answer» B. Tad > MPC1 and MPC2 | |
| 2. |
Solid state combustion leads to _______ combustion velocities. |
| A. | Highest |
| B. | Lowest |
| C. | Lower |
| D. | High |
| Answer» C. Lower | |
| 3. |
In the case of TiB2, high pressures are needed to make it a gasless combustion. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
In SHS reactions, an important parameter is the _________ |
| A. | Isothermal temperature |
| B. | Volumetric expansion |
| C. | Adiabatic temperature |
| D. | Heat |
| Answer» D. Heat | |
| 5. |
Which of the following equation represents ‘reaction of the elements with decomposition products’ type of SHS reaction? |
| A. | Ni + Al → NiAl |
| B. | 2TiH2 + N2 → 2TiN + 2H2 |
| C. | B2O3 + TiO2 + 5Mg → TiB2 + 5MgO |
| D. | 2BH3N2H4 → 2BN + N2 + 7H2 |
| Answer» C. B2O3 + TiO2 + 5Mg → TiB2 + 5MgO | |
| 6. |
Which of the following equation represents ‘Synthesis from compounds’ type of SHS reaction? |
| A. | PbO + WO3 → PbWO4 |
| B. | B2O3 + 3Mg + N2 → 2BN + 3MgO |
| C. | Nb + Li2O2 + 0.5Ni2O5 → 2LiNbO3 |
| D. | Ni + Al → NiAl |
| Answer» B. B2O3 + 3Mg + N2 → 2BN + 3MgO | |
| 7. |
Which of the following equation represents ‘Thermal decomposition’ type of SHS reaction? |
| A. | Nb + Li2O2 + 0.5Ni2O5 → 2LiNbO3 |
| B. | 2TiH2 + N2 → 2TiN + 2H2 |
| C. | 2BH3N2H4 → 2BN + N2 + 7H2 |
| D. | B2O3 + 3Mg + N2 → 2BN + 3MgO |
| Answer» D. B2O3 + 3Mg + N2 → 2BN + 3MgO | |
| 8. |
Which of the following equation represents ‘Redox reaction’ type of SHS reaction? |
| A. | Ti + C → TiC |
| B. | B2O3 + 3Mg + N2 → 2BN + 3MgO |
| C. | Nb + Li2O2 + 0.5Ni2O5 → 2LiNbO3 |
| D. | 2TiH2 + N2 → 2TiN + 2H2 |
| Answer» C. Nb + Li2O2 + 0.5Ni2O5 → 2LiNbO3 | |
| 9. |
Which of the following equation represents ‘oxidation of metals with complex oxides’ type of SHS reaction? |
| A. | PbO + WO3 → PbWO4 |
| B. | B2O3 + 3Mg + N2 → 2BN + 3MgO |
| C. | Ni + Al → NiAl |
| D. | Nb + Li2O2 + 0.5Ni2O5 → 2LiNbO3 |
| Answer» E. | |
| 10. |
Which of the following equation represents ‘Synthesis from elements’ type of SHS reaction? |
| A. | Ti + C → TiC |
| B. | B2O3 + 3Mg + N2 → 2BN + 3MgO |
| C. | Nb + Li2O2 + 0.5Ni2O5 → 2LiNbO3 |
| D. | PbO + WO3 → PbWO4 |
| Answer» B. B2O3 + 3Mg + N2 → 2BN + 3MgO | |
| 11. |
______ different types of reactions are possible in SHS. |
| A. | 6 |
| B. | 7 |
| C. | 8 |
| D. | 5 |
| Answer» B. 7 | |