MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
50 g benzaldehyde vapour is condensed at 179°C, What is the enthalpy of the liquid relative to the vapour? |
| A. | Given: The molecular weight of benzaldehyde is 106.12, the normal boiling point is 179.0°C and the standard heat of vaporization is 38.40 kJ gmol-1. For condensation the latent heat is – 38.40 kJ gmol-1. |
| B. | -18.09 kJ |
| C. | -17.09 kJ |
| D. | – 18.06 kJ |
| E. | – 17.06 kJ |
| Answer» B. -18.09 kJ | |
| 2. |
What is the enthalpy of 130 g formic acid at 70°C and 1 atm relative to 25°C and 1 atm? |
| A. | Cp for formic acid in the temperature range of interest is 0.524 cal g-1 °C-1. |
| B. | 4.68 kcal |
| C. | 3.06 kcal |
| D. | 2.06 kcal |
| E. | 2.68 kcal |
| Answer» C. 3.06 kcal | |
| 3. |
Calculate ΔH for a process in which 2.0 mole of NaOH is dissolved in 400 mol H2O at 25C. |
| A. | (\(\Delta \hat{H}_{s}\) at r = 200, 25°C is – 42.26 kJ/ mol) |
| B. | –84.52 kJ |
| C. | -80.42 kJ |
| D. | –64.52 kJ |
| E. | –60. 42 kJ |
| Answer» B. –84.52 kJ | |
| 4. |
Calculate how much energy (kJ) is required to heat a bottle containing 300 mL of liquid water from room temperature (20 °C) to its normal boiling point (100 °C), while still remaining a liquid. |
| A. | 104.4 kJ |
| B. | 100.4 kJ |
| C. | 140.4 kJ |
| D. | 104.5 kJ |
| Answer» C. 140.4 kJ | |
| 5. |
The symbol “Û” refers to? |
| A. | Amount |
| B. | Rate of enthalpy |
| C. | Molar flow rate |
| D. | Specific internal energy |
| Answer» E. | |