MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Separation Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the density of CuO in ore ρ = 0.05It is leached with H2SO4 = 0.5MOre particle have radius r=0.5Effective diffusivity De= 9*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 2.53h |
| B. | 3.4h |
| C. | 5.56h |
| D. | 6.78h |
| Answer» B. 3.4h | |
| 2. |
If the density of CuO in ore ρ = 0.05It is leached with H2SO4 = 0.5MOre particle have radius r=0.5Effective diffusivity De= 4.44*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 5.13h |
| B. | 5.3h |
| C. | 5.65h |
| D. | 6.4h |
| Answer» B. 5.3h | |
| 3. |
If the density of CuO in ore ρ = 0.05It is leached with H2SO4 = 0.5MOre particle have radius r=0.66Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 6.12h |
| B. | 6.22h |
| C. | 6.62h |
| D. | 6.4h |
| Answer» D. 6.4h | |
| 4. |
If the density of CuO in ore ρ = 0.04It is leached with H2SO4 = 0.5MOre particle have radius r=0.5Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 3.8h |
| B. | 4.75h |
| C. | 7.8h |
| D. | 6.4h |
| Answer» C. 7.8h | |
| 5. |
If the density of CuO in ore ρ = 0.03It is leached with H2SO4 = 0.5MOre particle have radius r=0.5Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 2.1h |
| B. | 2.28h |
| C. | 7.8h |
| D. | 6.4h |
| Answer» C. 7.8h | |
| 6. |
If the density of CuO in ore ρ = 0.06It is leached with H2SO4 = 0.5MOre particle have radius r=0.7Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 10.2h |
| B. | 10.42h |
| C. | 10.54h |
| D. | 6.4h |
| Answer» C. 10.54h | |
| 7. |
If the density of CuO in ore ρ = 0.08It is leached with H2SO4 = 0.5MOre particle have radius r=0.5Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 6.08h |
| B. | 6.32h |
| C. | 6.35h |
| D. | 6.4h |
| Answer» B. 6.32h | |
| 8. |
If the density of CuO in ore ρ = 0.05It is leached with H2SO4 = 0.5MOre particle have radius r=0.56Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 4.2h |
| B. | 4.3h |
| C. | 4.76h |
| D. | 6.4h |
| Answer» D. 6.4h | |
| 9. |
If the density of CuO in ore ρ = 0.05It is leached with H2SO4 = 0.6MOre particle have radius r=0.5Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 3.8h |
| B. | 4.56h |
| C. | 7.87h |
| D. | 9.4h |
| Answer» C. 7.87h | |
| 10. |
If the density of CuO in ore ρ = 0.05It is leached with H2SO4 = 0.5MOre particle have radius r=0.5Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching. |
| A. | 3.8h |
| B. | 4.6h |
| C. | 7.8h |
| D. | 6.4h |
| Answer» B. 4.6h | |