MCQOPTIONS
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MCQOPTIONS
This section includes 17 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. |
What is the COD (chemical oxygen demand) of ethanol, expressed as g COD/g ethanol? |
| A. | 1.30 g COD/g ethanol |
| B. | 32 g COD/g ethanol |
| C. | 2.24 g COD/g ethanol |
| D. | of ethanol, expressed as g COD/g ethanol?a) 1.30 g COD/g ethanolb) 32 g COD/g ethanolc) 2.24 g COD/g ethanold) 2.09 g COD/g ethanol |
| Answer» E. | |
| 2. |
What is the degree of reduction of glucose? |
| A. | 4 |
| B. | 3 |
| C. | 12 |
| D. | 24 |
| Answer» E. | |
| 3. |
The growth of S.cerevisiae on glucose under anaerobic conditions can be described by the following reaction:C6H12O6 + aNH3 → 0.59 CH1.64N0.16O0.52 (biomass) + 0.43 C3H8O3 + 1.54CO2 + 1.3C2H5OH + 0.036H2O and determine the product yield coefficient Y etoh/s and determine coefficient a. |
| A. | 0.57 g. g⁻¹, 0.078 |
| B. | 0.33 g. g⁻¹, 0.094 |
| C. | 0.45 g. g⁻¹, 0.086 |
| D. | 0.44 g. g⁻¹, 0.056 |
| Answer» C. 0.45 g. g⁻¹, 0.086 | |
| 4. |
The growth of S.cerevisiae on glucose under anaerobic conditions can be described by the following reaction:C6H12O6 + aNH3 → 0.59 CH1.64N0.16O0.52 (biomass) + 0.43 C3H8O3 + 1.54CO2 + 1.3C2H5OH +0.036H2ODetermine the biomass (MW= 23.74) yield coefficient Y x/s |
| A. | 0.078 g. g⁻¹ |
| B. | 0.070 g. g⁻¹ |
| C. | 0.068 g. g⁻¹ |
| D. | 0.060 g. g⁻¹ |
| Answer» B. 0.070 g. g⁻¹ | |
| 5. |
Estimating Yield from Stoichiometry:3C6H12O6 + 8 O2 + 2NH3 -> 2C5H7O2N + 8CO2 +14H2OGiven:3(180) 8(32) 2(17) 2(113)Calculate the yield of glucose. |
| A. | 0.53 g cells / g glucose used |
| B. | 0.27 g cells / g glucose used |
| C. | 0.42 g cells / g glucose used |
| D. | 0.51 g cells / g glucose used |
| Answer» D. 0.51 g cells / g glucose used | |
| 6. |
A yeast (CH1.66N0.13O0.40) is growing aerobically on arabinose (C5H10O5) and ammonium hydroxide (NH4OH) with a respiratory quotient of 1.4. Estimate the stoichiometric coefficient of the equation:aC5H10O5 + bO2 + cNH4OH → CH1.66N0.13O0.40 + dCO2 + eH2O |
| A. | a = 0.2823, b = 0.2938, c = 0.13, d = 0.4113, e = 0.9065 |
| B. | a = 0.2893, b = 0.3638, c = 0.13, d = 0.4321, e = 0.9478 |
| C. | a = 0.2843, b = 0.2590, c = 0.13, d = 0.4321, e = 0.9576 |
| D. | a = 0.2823, b = 0.2130, c = 0.13, d = 0.4113, e = 0.8743 |
| Answer» B. a = 0.2893, b = 0.3638, c = 0.13, d = 0.4321, e = 0.9478 | |
| 7. |
Calculate the stoichiometric coefficients of the following biological reaction:Glucose: C6H12O6 + aO2 + bNH3 = c (C4.4H7.3N0.86O1.2) + d H2O + e CO2 |
| A. | a = 1.573, b = 0.685, c = 0.470, d = 2.564, e = 2 |
| B. | a = 2.789, b = 1.896, c = 0.438, d = 1.395, e = 1 |
| C. | a = 1.473, b = 0.782, c = 0.909, d = 3.854, e = 2 |
| D. | a = 2.390, b = 1.295, c = 0.943, d = 2. 564, e = 1 |
| Answer» D. a = 2.390, b = 1.295, c = 0.943, d = 2. 564, e = 1 | |
| 8. |
Calculate the stoichiometric coefficients of the following biological reaction:Hexadecane: C16H34 + a O2 + b NH3 = c (C4.4H7.3N0.86O1.2) + d H2O + e CO2 |
| A. | a = 12.427, b = 2.085, c = 2.42, d = 12.43, e = 5.33 |
| B. | a = 12.345, b = 3.456, c = 2.42, d = 12.46, e = 5.44 |
| C. | a = 12.594, b = 2.345, c = 3.42, d = 12.49, e = 5.66 |
| D. | a = 12.345, b = 3.560, c = 3.42, d = 12.46, e = 5.44 |
| Answer» B. a = 12.345, b = 3.456, c = 2.42, d = 12.46, e = 5.44 | |
| 9. |
Estimate the degree of reduction of Methane, Glucose and Ethanol? |
| A. | γ(CH4) = 6, γ(C6H12O6) = 4, γ(C2H5OH) = 6 |
| B. | γ(CH4) = 6, γ(C6H12O6) = 4, γ(C2H5OH) = 8 |
| C. | γ(CH4) = 8, γ(C6H12O6) = 4, γ(C2H5OH) = 6 |
| D. | γ(CH4) = 4, γ(C6H12O6) = 6, γ(C2H5OH) = 8 |
| Answer» D. γ(CH4) = 4, γ(C6H12O6) = 6, γ(C2H5OH) = 8 | |
| 10. |
”Bacteria have slightly higher nitrogen content than fungi”. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
WHAT_IS_THE_DEGREE_OF_REDUCTION_OF_GLUCOSE??$ |
| A. | 4 |
| B. | 3 |
| C. | 12 |
| D. | 24 |
| Answer» E. | |
| 12. |
What_is_the_COD_(chemical_oxygen_demand)_of_ethanol,_expressed_as_g_COD/g_ethanol?$ |
| A. | 1.30 g COD/g ethanol |
| B. | 32 g COD/g ethanol |
| C. | 2.24 g COD/g ethanol |
| D. | 2.09 g COD/g ethanol |
| Answer» E. | |
| 13. |
Refer Q7, and determine the product yield coefficient Y etoh/s and determine coefficient a? |
| A. | 0.57 g. g⁻¹, 0.078 |
| B. | 0.33 g. g⁻¹, 0.094 |
| C. | 0.45 g. g⁻¹, 0.086 |
| D. | 0.44 g. g⁻¹, 0.056 |
| Answer» C. 0.45 g. g‚Äö√Ñ√∂‚àö√ñ¬¨‚Ñ¢¬¨¬®≈ì√Ñ, 0.086 | |
| 14. |
The growth of S.cerevisiae on glucose under anaerobic conditions can be described by the following reaction: |
| A. | + 0.43 C‚ÇÉH‚ÇàO‚ÇÉ + 1.54CO‚ÇÇ + 1.3C‚ÇÇH‚ÇÖOH +0.036H‚ÇÇO |
| B. | yield coefficient Y x/s |
| C. | 0.078 g. g⁻¹ |
| D. | 0.070 g. g⁻¹ |
| Answer» B. yield coefficient Y x/s | |
| 15. |
H10O5) and ammonium hydroxide (NH4OH) with a respiratory quotient of 1.4. Estimate the stoichiometric coefficient of the equation: |
| A. | |
| B. | a = 0.2823, b = 0.2938, c = 0.13, d = 0.4113, e = 0.9065 |
| C. | a = 0.2893, b = 0.3638, c = 0.13, d = 0.4321, e = 0.9478 |
| Answer» B. a = 0.2823, b = 0.2938, c = 0.13, d = 0.4113, e = 0.9065 | |
| 16. |
Calculate the stoichiometric coefficients of the following biological reaction: |
| A. | + d H2O + e CO<sub>2</sub> |
| B. | a= 12.427, b= 2.085, c= 2.42, d= 12.43, e= 5.33 |
| C. | a= 12.345, b= 3.456, c= 2.42, d= 12.46, e= 5.44 |
| D. | a= 12.594, b= 2.345, c= 3.42, d= 12.49, e= 5.66 |
| Answer» B. a= 12.427, b= 2.085, c= 2.42, d= 12.43, e= 5.33 | |
| 17. |
” Bacteria have slightly higher nitrogen content than fungi” is this statement true or false? |
| A. | True |
| B. | False |
| Answer» B. False | |