MCQOPTIONS
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MCQOPTIONS
This section includes 6 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:
|
| A. | nIf 200 g of propane is burned, how many g of H<sub>2</sub>O is produced? |
| B. | 327.27 g |
| C. | 345.5 g |
| D. | 323.2 g |
| E. | 232.3 g |
| Answer» B. 327.27 g | |
| 2. |
Calculate the degree of reduction for ethanol, where the degree of reduction of C=4, H=1, O=-2. |
| A. | = 9 |
| B. | = 6 |
| C. | = 3 |
| D. | = 2 |
| Answer» C. = 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. | 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» D. 14.7%, 23.1%, 0.059, 2.77 moles in m<sup>3</sup> | |
| 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 10<sup>3</sup> kg, 9 10<sup>3</sup> kg |
| B. | 1 10<sup>2</sup> kg, 9.965 10<sup>4</sup> kg |
| C. | 1 10<sup>3</sup> kg, 9.964 10<sup>4</sup> kg |
| D. | 1 10<sup>2</sup> kg, 9 10<sup>3</sup> kg |
| Answer» C. 1 10<sup>3</sup> kg, 9.964 10<sup>4</sup> kg | |