MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 98 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What separates system and surroundings? |
| A. | Boundary |
| B. | Temperature |
| C. | Pressure |
| D. | None of the mentioned |
| Answer» B. Temperature | |
| 2. |
What is the fraction of a gas in a system at partial pressure 1 mm Hg, if the 0.2 fraction of the same gas is at partial pressure 2 mm Hg and 0.3 fraction at partial pressure 3 mm Hg (Use Freundlich Isotherm)? |
| A. | 0.1 |
| B. | 0.2 |
| C. | 0.3 |
| D. | 0.4 |
| Answer» B. 0.2 | |
| 3. |
Which of the following is an intensive variable? |
| A. | Moles |
| B. | Enthalpy per mole |
| C. | Enthalpy |
| D. | All of the mentioned |
| Answer» C. Enthalpy | |
| 4. |
You shake a thermos so that the temperature of tea inside increases by 2°C, if you transferred Q amount of heat to the thermos, which of the following satisfies Q? |
| A. | Q > 0 |
| B. | Q < 0 |
| C. | Q = 0 |
| D. | Cannot say |
| Answer» D. Cannot say | |
| 5. |
According to Henry’s Law, what is the fraction of a gas with partial pressure p and Henry’s constant H? |
| A. | p*H |
| B. | p/H |
| C. | p + H |
| D. | p – H |
| Answer» C. p + H | |
| 6. |
Which of the following is then property of adsorbtion isotherm? |
| A. | Linear |
| B. | Decreasing |
| C. | Monotonous |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 7. |
What is the fraction of a gas in a system at partial pressure 3 atm, if the 0.2 fraction of the same gas is at partial pressure 4 atm and 0.3 fraction at partial pressure 6 atm (Use Freundlich Isotherm)? |
| A. | 0.1 |
| B. | 0.15 |
| C. | 0.2 |
| D. | 0.25 |
| Answer» C. 0.2 | |
| 8. |
Which of the following is an intensive property? |
| A. | Mole |
| B. | Gibbs Free energy |
| C. | Enthalpy |
| D. | None of the mentioned |
| Answer» E. | |
| 9. |
Internal energy is which of the following function? |
| A. | Path function |
| B. | State function |
| C. | Cannot say |
| D. | None of the mentioned |
| Answer» C. Cannot say | |
| 10. |
0.2 mole glucose reacts completely with excess air, if 5 liter of bone dry air is produced at 27°C and 5 atm, what is the humidity? |
| A. | 40% |
| B. | 80% |
| C. | 120% |
| D. | 160% |
| Answer» D. 160% | |
| 11. |
1 mole glucose reacts completely with excess air, if 25 liter of bone dry air is produced at 27°C and 5 atm, what is the humidity? |
| A. | 40% |
| B. | 80% |
| C. | 120% |
| D. | 160% |
| Answer» D. 160% | |
| 12. |
10 mole glucose reacts completely with excess air, if 25 liter of bone dry air is produced at 27°C and 30 atm, what is the humidity? |
| A. | 100% |
| B. | 200% |
| C. | 300% |
| D. | 400% |
| Answer» C. 300% | |
| 13. |
1.5 mole glucose reacts completely with excess air, if 5 liter of bone dry air is produced at 27°C and 30 atm, what is the humidity? |
| A. | 50% |
| B. | 150% |
| C. | 200% |
| D. | 300% |
| Answer» C. 200% | |
| 14. |
Which of the following adsorbs on the adsorbing surface? |
| A. | Adsorbate |
| B. | Adsorbent |
| C. | Absobate |
| D. | None of the mentioned |
| Answer» B. Adsorbent | |
| 15. |
Which of the following is an extensive variable? |
| A. | Pressure |
| B. | Temperature |
| C. | Volume |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 16. |
An object moved forward 10 meters and then comes back 5 meter all with a constant force of 5 N, what is the work done by the force? |
| A. | 5 Joule |
| B. | 25 Joule |
| C. | 50 Joule |
| D. | 75 Joule |
| Answer» C. 50 Joule | |
| 17. |
What is the partial pressure of a 10% gas in a system, if H = 2 mm Hg? |
| A. | 0.1 mm Hg |
| B. | 0.2 mm Hg |
| C. | 0.3 mm Hg |
| D. | 0.4 mm Hg |
| Answer» C. 0.3 mm Hg | |
| 18. |
A 40% gas in a system has partial pressure 4 atm, what is Henry’s constant? |
| A. | 1.6 atm |
| B. | 4 atm |
| C. | 10 atm |
| D. | 16 atm |
| Answer» D. 16 atm | |
| 19. |
Which of the following has steepest P-V curve? |
| A. | Adiabatic |
| B. | Isothermal |
| C. | Isobaric |
| D. | None of the mentioned |
| Answer» B. Isothermal | |
| 20. |
What is the total pressure of a system having 25% CO₂ with 4 atm partial pressure and 30% O₂ with 10 atm partial pressure, and 45% SO₂ with partial pressure 20 atm? |
| A. | 9 atm |
| B. | 13 atm |
| C. | 17 atm |
| D. | 19 atm |
| Answer» C. 17 atm | |
| 21. |
A piston cylinder is compressed with some pressure, what is the work done on the system? |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | Cannot say |
| Answer» B. Negative | |
| 22. |
A piston cylinder expands from 7 liter to 15 liter with external pressure of 500 Pa, what is the work done by the system? |
| A. | – 1.5 Joule |
| B. | – 4 Joule |
| C. | 1.5 Joule |
| D. | 4 Joule |
| Answer» C. 1.5 Joule | |
| 23. |
Which of the following satisfies the first derivative of adsorbtion isotherms? |
| A. | Greater than 1 |
| B. | Less than 1 |
| C. | Equal to 1 |
| D. | Cannot say |
| Answer» B. Less than 1 | |
| 24. |
An object is moved from one position to another with a specific force, what type of work is it? |
| A. | Shaft Work |
| B. | Flow Work |
| C. | Mechanical Work |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 25. |
Which of the following is true for open system? |
| A. | Flow system |
| B. | Non flow system |
| C. | Cannot say |
| D. | None of the mentioned |
| Answer» B. Non flow system | |
| 26. |
What is the fraction of a gas in a system at partial pressure 2 mm Hg, if the 0.2 fraction of the same gas is at partial pressure 8 mm Hg and 0.3 fraction at partial pressure 18 mm Hg (Use Freundlich Isotherm)? |
| A. | 0.0125 |
| B. | 0.0250 |
| C. | 0.0375 |
| D. | 0.0450 |
| Answer» B. 0.0250 | |
| 27. |
What is the fraction of a gas in a system at partial pressure 1 atm, if the 0.1 fraction of the same gas is at partial pressure 2 atm and 0.2 fraction at partial pressure 4 atm (Use Freundlich Isotherm)? |
| A. | 0.01 |
| B. | 0.03 |
| C. | 0.05 |
| D. | 0.08 |
| Answer» D. 0.08 | |
| 28. |
Which of the following is correct about an isothermal process? |
| A. | ∆T = 0 |
| B. | dT = 0 |
| C. | ∆T /= 0 |
| D. | None of the mentioned |
| Answer» C. ∆T /= 0 | |
| 29. |
Which of the following is called for the adsorbing the molecules? |
| A. | Adsorbate |
| B. | Adsorbent |
| C. | Absobate |
| D. | None of the mentioned |
| Answer» C. Absobate | |
| 30. |
What is called the ratio of partial pressure of vapor and partial pressure of dry gas? |
| A. | Humidity |
| B. | Relative humidity |
| C. | Molal humidity |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 31. |
What is the molal saturation of a gas with 10 moles of gas vapor and 25 moles of dry gas? |
| A. | 0.2 |
| B. | 0.4 |
| C. | 0.8 |
| D. | 1 |
| Answer» C. 0.8 | |
| 32. |
What is the molal saturation of a gas with 10 Pa partial pressure without vapor and 0.5 atm partial pressure with vapor? |
| A. | 0.5 |
| B. | 1 |
| C. | 5 |
| D. | 101.3 |
| Answer» D. 101.3 | |
| 33. |
What is the K value of a gas with partial pressure 50 Pa and total pressure of the system is 1 mm Hg? |
| A. | 0.37 |
| B. | 0.45 |
| C. | 0.79 |
| D. | 0.91 |
| Answer» B. 0.45 | |
| 34. |
What is the molal humidity of a gas with partial pressure with vapor 1 mm Hg and partial pressure without vapor 1 atm? |
| A. | 90% |
| B. | 131% |
| C. | 214% |
| D. | 288% |
| Answer» C. 214% | |
| 35. |
A piston cylinder contracts from 10 Liter to 5 Liter with and external pressure of 10 Pa, what is the work done on the system? |
| A. | 0.5 mJ |
| B. | 5 mJ |
| C. | 10 mJ |
| D. | 50 mJ |
| Answer» E. | |
| 36. |
What is the total pressure of a system having 50% H₂CO₃ with 6 atm partial pressure and 50% O₂ with 12 atm partial pressure? |
| A. | 3 atm |
| B. | 6 atm |
| C. | 9 atm |
| D. | 12 atm |
| Answer» D. 12 atm | |
| 37. |
Q amount of heat is transferred in an adiabatic process, which of the following is correct? |
| A. | Q > 0 |
| B. | Q = 0 |
| C. | Q < 0 |
| D. | Cannot say |
| Answer» C. Q < 0 | |
| 38. |
Which of the following is not the type of energy? |
| A. | Enthalpy |
| B. | Heat |
| C. | Entropy |
| D. | Work |
| Answer» D. Work | |
| 39. |
An object is moved at a distance of 10 m with the force of 5 N, what is the work done by the force? |
| A. | 5 Joule |
| B. | 50 Joule |
| C. | 500 Joule |
| D. | 5000 Joule |
| Answer» C. 500 Joule | |
| 40. |
Which of the following is true about closed system? |
| A. | Flow system |
| B. | Non flow system |
| C. | Cannot say |
| D. | None of the mentioned |
| Answer» C. Cannot say | |
| 41. |
A piston cylinder expands with some pressure, what is the work done by the system? |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | Cannot Say |
| Answer» B. Negative | |
| 42. |
What is the mass of water vapor, if the mass of dry gas is 10 lb and humidity 10%? |
| A. | 254 g |
| B. | 453 g |
| C. | 746 g |
| D. | 1 Kg |
| Answer» C. 746 g | |
| 43. |
What is the humidity if the moles of dry gas are 25 and mole of water vapor are 15? |
| A. | 60% |
| B. | 90% |
| C. | 150% |
| D. | 200% |
| Answer» B. 90% | |
| 44. |
What are moles of dry gas if the moles of water vapor is 14 at 25% humidity? |
| A. | 3.5 |
| B. | 7 |
| C. | 14 |
| D. | 56 |
| Answer» E. | |
| 45. |
A reaction has produced 1 mole of water vapor and 5 liter of bone dry air at 27°C and 5 atm, what is the humidity? |
| A. | 100% |
| B. | 104% |
| C. | 115% |
| D. | 169% |
| Answer» B. 104% | |
| 46. |
A reaction has produced 5 moles of water vapor and 10 liter bone dry air at 27°C and 15 atm, what is the humidity? |
| A. | 24% |
| B. | 49% |
| C. | 83% |
| D. | 106% |
| Answer» D. 106% | |
| 47. |
A reaction has produced 1.5 moles of water and 2 liter of bone dry air at 27°C and 25 atm, what is the humidity? |
| A. | 5% |
| B. | 25% |
| C. | 50% |
| D. | 75% |
| Answer» E. | |
| 48. |
A reaction has produced 0.4 mole of water vapor and 1 liter of bone dry air at 27°C and 5 atm, what is the humidity? |
| A. | 85% |
| B. | 143% |
| C. | 178% |
| D. | 200% |
| Answer» E. | |
| 49. |
A reaction has produced 45 moles of water and 25 liter of bone dry air at 27°C and 25 atm, what is the humidity? |
| A. | 25% |
| B. | 104% |
| C. | 180% |
| D. | 209% |
| Answer» D. 209% | |
| 50. |
50 mole of CH₄ reacts completely with excess air, if 25 liter of bone dry air is produced at 27°C and 25 atm, what is the humidity? |
| A. | 20% |
| B. | 80% |
| C. | 200% |
| D. | 400% |
| Answer» E. | |