MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 480 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Process Calculation knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
A gas mixture with 6% O₂ with pressure 1 atm at 27°C is entered a reactor with rate F, and another stream with pure O₂ with 2 atm pressure at 27°C entered the reactor with rate 1 liter/s, product has 10% O₂ with same conditions with rate P, what is the value of F? |
| A. | 575.5 liter/s |
| B. | 725 liter/s |
| C. | 895 liter/s |
| D. | 997.5 liter/s |
| Answer» E. | |
| 302. |
A gas mixture with 50% H₂ at the rate F is passed through a reactor and it produced a gas mixture with 80% H₂ at the rate 15 liter/s, what is the value of F? |
| A. | 5 liter/s |
| B. | 8 liter/s |
| C. | 15 liter/s |
| D. | 24 liter/s |
| Answer» E. | |
| 303. |
A gas mixture has 30% O₂, 40% H₂, and 30% N₂ with molar volume of N₂ 10 L/mole at temperature 27°C, what is the partial pressure of H₂? |
| A. | 2.4 atm |
| B. | 3.6 atm |
| C. | 4.8 atm |
| D. | 6.4 atm |
| Answer» B. 3.6 atm | |
| 304. |
A container has gas mixture of 40% CO₂ and 60% H₂ with total pressure 10 Pa, if now O₂ is added to it isothermally so that the final composition of the mixture becomes 20% CO₂, 30% H₂, and 50% O₂, what is the partial pressure of O₂ in the new composition? |
| A. | 5 Pa |
| B. | 10 Pa |
| C. | 20 Pa |
| D. | 35 Pa |
| Answer» C. 20 Pa | |
| 305. |
A gas mixture contains 20% CO, 30% SO₂, and 50% N₂, if the partial pressure of N₂ is 5 atm at 27°C, what is the molar volume of N₂? |
| A. | 2.4 liter |
| B. | 3.7 liter |
| C. | 4.9 liter |
| D. | 5.6 liter |
| Answer» B. 3.7 liter | |
| 306. |
A gas mixture with 20% O₂ with pressure 100 Pa at 27°C at the rate 50 liter/s is passed through a reactor and products a gas mixture with 40% O₂ with pressure 25 Pa at 27°C, what is the rate of product? |
| A. | 50 liter/s |
| B. | 100 liter/s |
| C. | 200 liter/s |
| D. | 400 liter/s |
| Answer» C. 200 liter/s | |
| 307. |
A gas mixture comprises of 20% CO₂, 50% O₂, and 30% N₂ has the total pressure 100 Pa at temperature -73°C, if the temperature is increased to 27°C, what is the new partial pressure of N₂? |
| A. | 15 Pa |
| B. | 30 Pa |
| C. | 45 Pa |
| D. | 60 Pa |
| Answer» D. 60 Pa | |
| 308. |
A container has gas mixture of 20% H₂ and 80% N₂ with total pressure P, now same amount of O₂ is added to the mixture, what is the new partial pressure of N₂? |
| A. | 0.2P |
| B. | 0.8P |
| C. | P |
| D. | 1.6P |
| Answer» C. P | |
| 309. |
Answer the question for the following diagram. The reaction is C2H4 + H2 -> C2H6, the overall conversion rate of C2H4 is 90%, and the single pass conversion rate is 20%.What are the moles of ethane in products? |
| A. | 2.4 |
| B. | 3.6 |
| C. | 6.4 |
| D. | 7.2 |
| Answer» C. 6.4 | |
| 310. |
Answer the question for the following diagram. The reaction is C2H4 + H2 -> C2H6, the overall conversion rate of C2H4 is 90%, and the single pass conversion rate is 20%.What is the extent of reaction? |
| A. | 3.6 |
| B. | 4.8 |
| C. | 6.4 |
| D. | 7.2 |
| Answer» B. 4.8 | |
| 311. |
Answer the following question for the given diagram, the reaction is A -> 2B.What is the single pass fraction conversion? |
| A. | 10% |
| B. | 20% |
| C. | 25% |
| D. | 50% |
| Answer» C. 25% | |
| 312. |
Answer the following question for the given diagram, the reaction is A -> 2B.What is the overall fraction conversion? |
| A. | 10% |
| B. | 20% |
| C. | 80% |
| D. | 100% |
| Answer» B. 20% | |
| 313. |
What is the total pressure of contained if it contains 0.5 fraction of O₂ with partial pressure 3 Pa, 0.3 fraction of H₂ with partial pressure 5 Pa, 0.2 fraction of CO₂ with partial pressure 15 Pa? |
| A. | 6 Pa |
| B. | 7 Pa |
| C. | 8 Pa |
| D. | 9 Pa |
| Answer» B. 7 Pa | |
| 314. |
What is the total pressure of contained if it contains 0.3 fraction of N₂ with partial pressure 8 Pa, 0.3 fraction of H₂ with partial pressure 2 Pa, 0.4 fraction of CO₂ with partial pressure 15 Pa? |
| A. | 6.4 Pa |
| B. | 7 Pa |
| C. | 8.5 Pa |
| D. | 9 Pa |
| Answer» E. | |
| 315. |
A vessel contains 10 moles of O₂ and some other gases, total pressure is 10 atm, what is the partial pressure of O₂? |
| A. | 1 atm |
| B. | 10 atm |
| C. | 100 atm |
| D. | Cannot be determined |
| Answer» E. | |
| 316. |
What is the partial pressure of O₂ with fraction 0.1, if the total pressure is 10 Pa? |
| A. | 1 Pa |
| B. | 3 Pa |
| C. | 5 Pa |
| D. | 7 Pa |
| Answer» B. 3 Pa | |
| 317. |
A container with total volume 10 liter is filled with 20% of O₂, 40% of N₂, and 40% of CO, what is the volume of O₂? |
| A. | 2 liter |
| B. | 4 liter |
| C. | 8 liter |
| D. | 10 liter |
| Answer» E. | |
| 318. |
What is the compressibility factor for an ideal gas? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | Depends on the gas |
| Answer» B. 2 | |
| 319. |
Which of the following is not the unit of R? |
| A. | Atm.liter/K.mole |
| B. | Pa.m³/K |
| C. | N.Kg.m³/K.mole |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 320. |
What is the specific gravity of CO₂ at 27°C and pressure 1 atm with respect to air of with density 1 g/L? |
| A. | 1.23 |
| B. | 1.55 |
| C. | 1.78 |
| D. | 1.96 |
| Answer» D. 1.96 | |
| 321. |
What is the specific gravity of CO at 27°C and pressure 5 atm with respect to air (molecular wt. = 29 g) at 27°C and pressure 10 atm? |
| A. | 0.48 |
| B. | 0.56 |
| C. | 0.64 |
| D. | 0.72 |
| Answer» B. 0.56 | |
| 322. |
What is the molecular mass of an ideal gas with pressure 1 atm, and density 10 g/L at temperature 27°C? |
| A. | 84.5 g |
| B. | 135.1 g |
| C. | 186.8 g |
| D. | 246.3 g |
| Answer» E. | |
| 323. |
A container has two gases at 27°C, one with molar volume 6 L/mole, another with molar volume 3 L/mole, what is the total pressure of the container? |
| A. | 6.9 atm |
| B. | 8.5 atm |
| C. | 12.3 atm |
| D. | 15.8 atm |
| Answer» D. 15.8 atm | |
| 324. |
A gas mixture contains 30% CO₂, 40% O₂, 30% N₂, if the partial pressure of CO₂ is 6 Pa, what is the total pressure of gas mixture? |
| A. | 6 Pa |
| B. | 10 Pa |
| C. | 20 Pa |
| D. | 60 Pa |
| Answer» D. 60 Pa | |
| 325. |
The highest pressure gas of a mixture has partial pressure p, the partial pressure of other gases decreases by factor of 2^(n-1), the partial pressure of second gases decreases by a factor of 2, partial pressure of third gas increases by 4, and so on, if the total pressure of gas mixture is 31p/16, how many gases are present in the mixture? |
| A. | 3 |
| B. | 5 |
| C. | 10 |
| D. | 15 |
| Answer» C. 10 | |
| 326. |
The fraction of gas in a container is 0.1, if the total pressure of the container is 10 atm, what is the partial pressure of the gas? |
| A. | 1 atm |
| B. | 5 atm |
| C. | 10 atm |
| D. | 20 atm |
| Answer» B. 5 atm | |
| 327. |
The fraction of gas in a container is 0.5, if the total volume of the container is 6 liter, what is the volume of the gas? |
| A. | 2 liter |
| B. | 3 liter |
| C. | 5 liter |
| D. | 6 liter |
| Answer» E. | |
| 328. |
95.65cm cube is critical temperature for |
| A. | oxygen |
| B. | carbon dioxide |
| C. | hydrogen |
| D. | sulphur |
| Answer» C. hydrogen | |
| 329. |
Constant used in Graham's law of diffusion is |
| A. | s |
| B. | p |
| C. | l |
| D. | k |
| Answer» E. | |
| 330. |
Gases which have more tendency to liquefy include |
| A. | carbon dioxide |
| B. | ammonia |
| C. | hydrogen |
| D. | sulphur |
| Answer» C. hydrogen | |
| 331. |
Metastable molecules have long |
| A. | survival |
| B. | wavelength |
| C. | chains |
| D. | volume |
| Answer» B. wavelength | |
| 332. |
The gas which fit in the criteria of kinetic theory description is called |
| A. | noble gas |
| B. | ideal gas |
| C. | non-ideal gas |
| D. | inert gas |
| Answer» C. non-ideal gas | |
| 333. |
The volume of gas is inversely proportional to |
| A. | pressure |
| B. | temperature |
| C. | concentration |
| D. | humidity |
| Answer» B. temperature | |
| 334. |
Sum of mole fraction of all gases is equal to |
| A. | two |
| B. | five |
| C. | six |
| D. | unity |
| Answer» E. | |
| 335. |
Molecule which is present in interior of gas is attracted by molecules |
| A. | on one side |
| B. | on two sides |
| C. | on all sides |
| D. | on three sides |
| Answer» D. on three sides | |
| 336. |
Radioactive contamination can be controlled by |
| A. | stable particles |
| B. | metastable particles |
| C. | small particles |
| D. | electrons |
| Answer» C. small particles | |
| 337. |
Most harmful effects of Acid Rain is on |
| A. | aquatic plants |
| B. | herbs |
| C. | trees |
| D. | none of above |
| Answer» D. none of above | |
| 338. |
Sun is a ball of plasma which is about |
| A. | 1.6 km |
| B. | 1.5km |
| C. | 1.9km |
| D. | 2.0km |
| Answer» C. 1.9km | |
| 339. |
R becomes 8.3143 when energy is taken in |
| A. | Newton per metre square |
| B. | torr |
| C. | calories |
| D. | joule |
| Answer» E. | |
| 340. |
Which of the following composition is controlled by purge stream? |
| A. | Feed |
| B. | Product stream |
| C. | Recycle stream |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 341. |
Which of the following is decreased by the bypass stream? |
| A. | Feed |
| B. | Product |
| C. | Feed & Product |
| D. | None of the mentioned |
| Answer» B. Product | |
| 342. |
Which of the following does the purge stream comes from? |
| A. | Feed stream |
| B. | Product stream |
| C. | Recycle stream |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 343. |
Which of the following composition can be controlled by bypass stream? |
| A. | Exit stream |
| B. | Feed |
| C. | process |
| D. | None of the mentioned |
| Answer» B. Feed | |
| 344. |
A bypass stream does not go through which of the following? |
| A. | Mixer |
| B. | process |
| C. | Separator |
| D. | None of the mentioned |
| Answer» C. Separator | |
| 345. |
Partial pressure of oxygen reported in air is |
| A. | 159 torr |
| B. | 169 torr |
| C. | 170 torr |
| D. | 179 torr |
| Answer» B. 169 torr | |
| 346. |
True pressure can be represented as |
| A. | P+P' |
| B. | P-P' |
| C. | P-V |
| D. | V-t |
| Answer» B. P-P' | |
| 347. |
Constant used in pressure correction by Van der Waal is |
| A. | d |
| B. | c |
| C. | b |
| D. | a |
| Answer» E. | |
| 348. |
Minimum temperature at which natural plasma exists is |
| A. | 600000degree Celsius |
| B. | 20000 degree Celsius |
| C. | 700000degree Celsius |
| D. | 900000 degree Celsius |
| Answer» C. 700000degree Celsius | |
| 349. |
Solids are non compressible because they have negligible |
| A. | spaces |
| B. | volume |
| C. | shape |
| D. | energy |
| Answer» B. volume | |
| 350. |
Reign of Thomas Graham is from |
| A. | 1809 - 1885 |
| B. | 1889 - 1996 |
| C. | 1945 - 1987 |
| D. | 1805 - 1869 |
| Answer» E. | |