MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 25 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. |
For CaOCl2, the rate of evaporation is given by W = 325p0.5M/T1.5 g/liter, where T is in K, p in mm Hg, and M is molecular weight, if its pressure is given by ln p* = 25 – 2700/T, what is the evaporation rate at T = 150 K? |
| A. | 256 g/liter |
| B. | 499 g/liter |
| C. | 571 g/liter |
| D. | 744 g/literView answer |
| Answer» E. | |
| 2. |
The vapor pressure of a compound in a liquid phase is given by ln p* = 21 – 2800/T, and in solid phase it is given by ln p* = 28 – 3500/T, what is the sublimation temperature of the compound? |
| A. | 100 K |
| B. | 120 K |
| C. | 150 K |
| D. | 200 KView answer |
| Answer» B. 120 K | |
| 3. |
The vapor pressure of liquid benzene is given by ln p* = 15 – 1280/T, and that of vapor benzene is given by ln p* = 23 – 2560/T, what is the boiling point of benzene? |
| A. | 160 K |
| B. | 200 K |
| C. | 240 K |
| D. | 300 KView answer |
| Answer» B. 200 K | |
| 4. |
At triple point, vapor pressure of ice is given by ln p* = 18 – 2560/T, and vapor pressure of water is given by ln p* = 28 – 5120/T, what is the temperature at triple point? |
| A. | 225 K |
| B. | 256 K |
| C. | 320 K |
| D. | 400 KView answer |
| Answer» C. 320 K | |
| 5. |
Temperature of SO2 at 5 Pa is 395 K and at 10 Pa temperature is 420 K, what is the temperature at 6 Pa? |
| A. | 400 K |
| B. | 405 K |
| C. | 410 K |
| D. | 415 KView answer |
| Answer» B. 405 K | |
| 6. |
What is the pressure of CO2 at 325 K, if it is given that pressure at 330 K is 6 Pa, and pressure at 320 K is 4 Pa? |
| A. | 4.5 Pa |
| B. | 5 Pa |
| C. | 5.5 Pa |
| D. | 6 PaView answer |
| Answer» C. 5.5 Pa | |
| 7. |
Pressure of a gas at 127oC is 10 mm Hg and the pressure at 527oC is 20 Pa, what is the value of B? |
| A. | 225.1 |
| B. | 365.5 |
| C. | 499.2 |
| D. | 554.5View answer |
| Answer» E. | |
| 8. |
If the pressure of a gas at 27oC is 15 mm Hg, what will be its pressure at 127oC, use B = 5 X 103, C = 0, T is in kelvin and P is in mm Hg? |
| A. | 579 mm Hg |
| B. | 775 mm Hg |
| C. | 961 mm Hg |
| D. | 999 mm HgView answer |
| Answer» D. 999 mm HgView answer | |
| 9. |
A material’s mass is given by the equation, m = 32P0.02/T0.5, where T is in Kelvin, m is in Kg and P is in mm Hg, what is the mass of material at 127oC, use A = 10, B = 6 X 103 and C = 0? |
| A. | 1.44 Kg |
| B. | 1.69 Kg |
| C. | 1.96 Kg |
| D. | 2.25 KgView answer |
| Answer» B. 1.69 Kg | |
| 10. |
What is the pressure of a gas at T = 227oC, it is given that A = 5, B = 4 X 104 and C = 0 if T is in kelvin and p in mm Hg? |
| A. | 0.024 mm Hg |
| B. | 0.049 mm Hg |
| C. | 0.075 mm Hg |
| D. | 0.096 mm HgView answer |
| Answer» C. 0.075 mm Hg | |
| 11. |
AT_TRIPLE_POINT,_VAPOR_PRESSURE_OF_ICE_IS_GIVEN_BY_LN_P*_=_18_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_2560/T,_AND_VAPOR_PRESSURE_OF_WATER_IS_GIVEN_BY_LN_P*_=_28_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬®_5120/T,_WHAT_IS_THE_TEMPERATURE_AT_TRIPLE_POINT??$# |
| A. | 225 K |
| B. | 256 K |
| C. | 320 K |
| D. | 400 K |
| Answer» C. 320 K | |
| 12. |
The vapor pressure of a compound in a liquid phase is given by ln p* = 21 – 2800/T, and in solid phase it is given by ln p* = 28 – 3500/T, what is the sublimation temperature of the compound?$# |
| A. | 100 K |
| B. | 120 K |
| C. | 150 K |
| D. | 200 K |
| Answer» B. 120 K | |
| 13. |
The vapor pressure of liquid benzene is given by ln p* = 15 – 1280/T, and that of vapor benzene is given by ln p* = 23 – 2560/T, what is the boiling point of benzene?$# |
| A. | 160 K |
| B. | 200 K |
| C. | 240 K |
| D. | 300 K |
| Answer» B. 200 K | |
| 14. |
The pressure of a compound at 200 K is 10 mm Hg and at 400 K it is 50 mm Hg, what is the pressure at T = 250 K? |
| A. | 18.1 mm Hg |
| B. | 24.2 mm Hg |
| C. | 36.3 mm Hg |
| D. | 48.4 mm Hg |
| Answer» B. 24.2 mm Hg | |
| 15. |
What is the vapor pressure of ammonia at 305 K, if it is given that the vapor pressure of ammonia at 315 K is 5 mm Hg and at 325 K it is 6 mm Hg? |
| A. | 1 mm Hg |
| B. | 2 mm Hg |
| C. | 3 mm Hg |
| D. | 4 mm Hg |
| Answer» E. | |
| 16. |
For CaOCl2, the rate of evaporation is given by W = 325p0.5M/T1.5 g/liter, where T is in K, p in mm Hg, and M is molecular weight, if its pressure is given by ln p* = 25 – 2700/T, what is the evaporation rate at T = 150 K?$ |
| A. | 256 g/liter |
| B. | 499 g/liter |
| C. | 571 g/liter |
| D. | 744 g/liter |
| Answer» E. | |
| 17. |
A liquid evaporates first at which of the following conditions? |
| A. | High attraction forces |
| B. | Low attraction forces |
| C. | Low vapor pressure |
| D. | High boiling point |
| Answer» C. Low vapor pressure | |
| 18. |
At which of the following values of pressure a solid melts first? |
| A. | 5 atm |
| B. | 720 mm Hg |
| C. | 500 KPa |
| D. | 40 Torr |
| Answer» B. 720 mm Hg | |
| 19. |
Temperature of SO2 at 5 Pa is 395 K and at 10 Pa temperature is 420 K, what is the temperature at 6 Pa? |
| A. | 400 K |
| B. | 405 K |
| C. | 410 K |
| D. | 415 K |
| Answer» B. 405 K | |
| 20. |
What is the pressure of CO2 at 325 K, if it is given that pressure at 330 K is 6 Pa, and pressure at 320 K is 4 Pa? |
| A. | 4.5 Pa |
| B. | 5 Pa |
| C. | 5.5 Pa |
| D. | 6 Pa |
| Answer» C. 5.5 Pa | |
| 21. |
Pressure of a gas at temperature T is P, What is the pressure of the gas at 2T, use B = 1? |
| A. | Pe<sup>1/T</sup> |
| B. | Pe<sup>1/2T</sup> |
| C. | Pe<sup>1/3T</sup> |
| D. | Pe<sup>1/4T</sup> |
| Answer» C. Pe<sup>1/3T</sup> | |
| 22. |
Pressure of a gas at 127oC is 10 mm Hg and the pressure at 527oC is 20 Pa, what is the value of B? |
| A. | 225.1 |
| B. | 365.5 |
| C. | 499.2 |
| D. | 554.5 |
| Answer» E. | |
| 23. |
If the pressure of a gas at 27oC is 15 mm Hg, what will be its pressure at 127oC, use B = 5 X 103, C = 0, T is in kelvin and P is in mm Hg? |
| A. | 579 mm Hg |
| B. | 775 mm Hg |
| C. | 961 mm Hg |
| D. | 999 mm Hg |
| Answer» D. 999 mm Hg | |
| 24. |
A material’s mass is given by the equation, m = 32P0.02/T0.5, where T is in Kelvin, m is in Kg and P is in mm Hg, what is the mass of material at 127oC, use A = 10, B = 6 X 103 and C = 0?$ |
| A. | 1.44 Kg |
| B. | 1.69 Kg |
| C. | 1.96 Kg |
| D. | 2.25 Kg |
| Answer» B. 1.69 Kg | |
| 25. |
What is the pressure of a gas at T = 227oC, it is given that A = 5, B = 4 X 104 and C = 0 if T is in kelvin and p in mm Hg? |
| A. | 0.024 mm Hg |
| B. | 0.049 mm Hg |
| C. | 0.075 mm Hg |
| D. | 0.096 mm Hg |
| Answer» C. 0.075 mm Hg | |