MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Propane (C3H8) burns in this reaction:C3H8 + 5O2 = 4H2O + 3CO2If 200 g of propane is burned, how many g of H2O is produced? |
| A. | 327.27 g |
| B. | 345.5 g |
| C. | 323.2 g |
| D. | 232.3 g |
| Answer» B. 345.5 g | |
| 2. |
Calculate the degree of reduction for ethanol, where the degree of reduction of C=4, H=1, O=-2. |
| A. | γ = 9 |
| B. | γ = 6 |
| C. | γ = 3 |
| D. | γ = 2 |
| Answer» C. γ = 3 | |
| 3. |
A solution of common salt in water is prepared by adding 20 kg of salt to 100 kg of water, to make a liquid of density 1323 kg/m3. Calculate the concentration of salt in this solution as a (a) weight fraction, (b) weight/volume fraction, (c) mole fraction, (d) molal concentration. |
| A. | weight fraction, (b) weight/volume fraction, (c) mole fraction, (d) molal concentration.a) 15.7%, 23.1%, 0.058, 3.88 moles in m3 |
| B. | weight/volume fraction, (c) mole fraction, (d) molal concentration.a) 15.7%, 23.1%, 0.058, 3.88 moles in m3b) 14.5%, 22.4%, 0.059, 2.88 moles in m3 |
| C. | mole fraction, (d) molal concentration.a) 15.7%, 23.1%, 0.058, 3.88 moles in m3b) 14.5%, 22.4%, 0.059, 2.88 moles in m3c) 16.7%, 22.1%, 0.058, 3.77 moles in m3 |
| D. | molal concentration.a) 15.7%, 23.1%, 0.058, 3.88 moles in m3b) 14.5%, 22.4%, 0.059, 2.88 moles in m3c) 16.7%, 22.1%, 0.058, 3.77 moles in m3d) 14.7%, 23.1%, 0.059, 2.77 moles in m3 |
| Answer» D. molal concentration.a) 15.7%, 23.1%, 0.058, 3.88 moles in m3b) 14.5%, 22.4%, 0.059, 2.88 moles in m3c) 16.7%, 22.1%, 0.058, 3.77 moles in m3d) 14.7%, 23.1%, 0.059, 2.77 moles in m3 | |
| 4. |
Two methanol-water mixtures are contained in separate tanks. The first mixture contains 40.0 wt% methanol and the second contains 70.0 wt% methanol. If 200 kg of the first mixture is combined with 150 kg of the second, what are the mass and composition of the product (Total balance, Methanol balance, Physical constraint)? |
| A. | 350 kg, 0.529, 0.471 |
| B. | 320 kg, 0.529, 0.521 |
| C. | 360 kg, 0.620, 0.471 |
| D. | 350 kg, 0.690, 0.760 |
| Answer» B. 320 kg, 0.529, 0.521 | |
| 5. |
2SO2+O2 → 2SO3. What is the stoichiometric ratio of SO2 to SO3? |
| A. | 3 |
| B. | 1 |
| C. | 2 |
| D. | 0 |
| Answer» C. 2 | |
| 6. |
A continuous process is set up for treatment of wastewater. Each day, 103 kg cellulose and 105 kg bacteria enter in the feed stream, while 102 kg cellulose and 1.5 x 102 kg bacteria leave in the effluent. The rate of cellulose digestion by the bacteria is 8 x 102 kg d-1. The rate of bacterial growth is 4x 102 kg d-l; the rate of cell death by lysis is 6 x 102 kg d-1. Write balances for cellulose and bacteria in the system. |
| A. | 1× 103 kg, 9 × 103 kg |
| B. | 1× 102 kg, 9.965 × 104 kg |
| C. | 1× 103 kg, 9.964 × 104 kg |
| D. | 1× 102 kg, 9 × 103 kg |
| Answer» C. 1× 103 kg, 9.964 × 104 kg | |
| 7. |
Which is the correct order for the equation of mass balance of the system? |
| A. | A. Mass consumed within system, B. Mass in through system boundaries, C. Mass out through system boundaries, D. Mass generated within system |
| B. | A. Mass generated within system, B. Mass in through system boundaries, C. Mass out through system boundaries, D. Mass consumed within system |
| C. | A. Mass in through system boundaries, B. Mass out through system boundaries, C. Mass generated within system, D. Mass consumed within system |
| D. | A. Mass consumed within system, B. Mass generated within system, C. Mass out through system boundaries, D. Mass in through system boundariesView Answer |
| Answer» D. A. Mass consumed within system, B. Mass generated within system, C. Mass out through system boundaries, D. Mass in through system boundariesView Answer | |
| 8. |
TWO_METHANOL-WATER_MIXTURES_ARE_CONTAINED_IN_SEPARATE_TANKS._THE_FIRST_MIXTURE_CONTAINS_40.0_WT%_METHANOL_AND_THE_SECOND_CONTAINS_70.0_WT%_METHANOL._IF_200_KG_OF_THE_FIRST_MIXTURE_IS_COMBINED_WITH_150_KG_OF_THE_SECOND,_WHAT_ARE_THE_MASS_AND_COMPOSITION_OF_THE_PRODUCT_(TOTAL_BALANCE,_METHANOL_BALANCE,_PHYSICAL_CONSTRAINT)_??$ |
| A. | 350 kg, 0.529, 0.471 |
| B. | 320 kg, 0.529, 0.521 |
| C. | 360 kg, 0.620, 0.471 |
| D. | 350 kg, 0.690, 0.760 |
| Answer» C. 360 kg, 0.620, 0.471 | |
| 9. |
A solution of common salt in water is prepared by adding 20 kg of salt to 100 kg of water, to make a liquid of density 1323 kg/m3. Calculate the concentration of salt in this solution as a (a) weight fraction, (b) weight/volume fraction, (c) mole fraction, (d) molal concentration.$ |
| A. | 15.7%, 23.1%, 0.058, 3.88 moles in m<sup>3</sup> |
| B. | 14.5%, 22.4%, 0.059, 2.88 moles in m<sup>3</sup> |
| C. | 16.7%, 22.1%, 0.058, 3.77 moles in m<sup>3</sup> |
| D. | 14.7%, 23.1%, 0.059, 2.77 moles in m<sup>3</sup> |
| Answer» B. 14.5%, 22.4%, 0.059, 2.88 moles in m<sup>3</sup> | |
| 10. |
2SO2+O2‚Üí 2SO3. What is the stoichiometric ratio of SO2 to SO3?# |
| A. | 3 |
| B. | 1 |
| C. | 2 |
| D. | 0 |
| Answer» D. 0 | |
| 11. |
Which of the following system follows the differential equation? |
| A. | Semi- Batch process |
| B. | Batch process |
| C. | Fed- Batch process |
| D. | Continuous process |
| Answer» B. Batch process | |
| 12. |
A continuous process is set up for treatment of wastewater. Each day, 103 kg cellulose and 105 kg bacteria enter in the feed stream, while 102 kg cellulose and 1.5 x 102 kg bacteria leave in the effluent. The rate of cellulose digestion by the bacteria is 8 x 102 kg d-1. The rate of bacterial growth is 4x 102 kg d-l; the rate of cell death by lysis is 6 x 102 kg d -1. Write balances for cellulose and bacteria in the system. |
| A. | 1√ó 103 kg, 9√ó 10<sup>3</sup> kg |
| B. | 1√ó 102 kg, 9.965 √ó 10<sup>4</sup> kg |
| C. | 1√ó 103 kg, 9.964 √ó 10<sup>4</sup> kg |
| D. | 1√ó 102 kg, 9√ó 10<sup>3</sup> kg |
| Answer» C. 1‚Äö√†√∂‚àö‚â• 103 kg, 9.964 ‚Äö√†√∂‚àö‚â• 10<sup>4</sup> kg | |
| 13. |
If the reactant Magnesium reacts with Reactant Hydrochloric acid to form the product Magnesium chloride + Hydrogen, then what will be the atomic mass of both the product? |
| A. | 90 |
| B. | 97 |
| C. | 80 |
| D. | 87 |
| Answer» E. | |
| 14. |
If the Reactant iron is combined with Reactant Sulfur to form the product Iron sulfide, then what will be the atomic mass of the product? |
| A. | 88 |
| B. | 44 |
| C. | 22 |
| D. | 80 |
| Answer» C. 22 | |
| 15. |
Mass consumed within system, B. Mass in through system boundaries, C. Mass out through system boundaries, D. Mass generated within system |
| A. | A. Mass generated within system, B. Mass in through system boundaries, C. Mass out through system boundaries, D. Mass consumed within system |
| B. | A. Mass in through system boundaries, B. Mass out through system boundaries, C. Mass generated within system, D. Mass consumed within system |
| C. | A. Mass consumed within system, B. Mass generated within system, C. Mass out through system boundaries, D. Mass in through system boundaries |
| Answer» C. A. Mass consumed within system, B. Mass generated within system, C. Mass out through system boundaries, D. Mass in through system boundaries | |