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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.
| 251. |
What is the Temperature of a 2 liter/mole ideal gas with pressure 10 atm? |
| A. | 243.6 K |
| B. | 268.4 K |
| C. | 289.1 K |
| D. | 313.5 K |
| Answer» B. 268.4 K | |
| 252. |
What is the shape of a V-T curve for ideal gas? |
| A. | Straight line |
| B. | Parabolic |
| C. | Hyperbolic |
| D. | Ellipse |
| Answer» B. Parabolic | |
| 253. |
Which of the following term does not involve in ideal gas law? |
| A. | Pressure |
| B. | Volume |
| C. | Temperature |
| D. | Time |
| Answer» E. | |
| 254. |
A gas mixture with 20% Neon with pressure 3 atm at 27°C is entered a reactor with rate F, and another stream with pure Neon with 2 atm pressure at 27°C entered the reactor with rate 5 liter/s, product has 40% Neon with same conditions with rate P, what is the value of F? |
| A. | 3 liter/s |
| B. | 15 liter/s |
| C. | 30 liter/s |
| D. | 45 liter/s |
| Answer» D. 45 liter/s | |
| 255. |
A gas mixture with 5% Neon with pressure 10 atm at 27°C is entered a reactor with rate F, and another stream with pure Neon with 8 atm pressure at 27°C entered the reactor with rate 3 liter/s, product has 10% Neon with same conditions with rate P, what is the value of F? |
| A. | 3 liter/s |
| B. | 15 liter/s |
| C. | 48 liter/s |
| D. | 72 liter/s |
| Answer» E. | |
| 256. |
CH₄ with pressure 10 atm and volume 10 liter at 27°C is passed into a reactor with 20% excess oxygen, how many moles of oxygen is left in the products? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 257. |
A gas mixture with 10% H₂ with pressure 15 Pa at 27°C at the rate 20 liter/s is passed through a reactor and products a gas mixture with 30% H₂ with pressure 25 Pa at 27°C, what is the rate of product? |
| A. | 4 liter/s |
| B. | 10 liter/s |
| C. | 24 liter/s |
| D. | 30 liter/s |
| Answer» B. 10 liter/s | |
| 258. |
A gas mixture with 50% Ar with pressure 80 Pa at 0°C at the rate 5 liter/s is passed through a reactor and products a gas mixture with 80% Ar with pressure 50 Pa at 27°C, what is the rate of product? |
| A. | 5 liter/s |
| B. | 10 liter/s |
| C. | 20 liter/s |
| D. | 40 liter/s |
| Answer» B. 10 liter/s | |
| 259. |
Answer the following question for the given diagram, the reaction is A -> 2B.What is the overall extent of reaction? |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 25 |
| Answer» B. 10 | |
| 260. |
What is the pressure of CO₂ gas with compressibility z = 0.8, if the ideal gas pressure of CO₂ is 10 Pa, all other variables are same? |
| A. | 5 |
| B. | 8 |
| C. | 10 |
| D. | 14 |
| Answer» C. 10 | |
| 261. |
What is the dew point of water at standard conditions? |
| A. | 32°F |
| B. | 212°F |
| C. | 372°F |
| D. | 584°F |
| Answer» C. 372°F | |
| 262. |
What is the shape of a P-T curve for ideal gas? |
| A. | Straight line |
| B. | Parabolic |
| C. | Hyperbolic |
| D. | Ellipse |
| Answer» B. Parabolic | |
| 263. |
What is the compressibility of methane with density 10 g/liter at 27°C and 500 atm? |
| A. | 32.5 |
| B. | 34.8 |
| C. | 39.6 |
| D. | 44.1 |
| Answer» B. 34.8 | |
| 264. |
What is the density of O₂ at 27°C with pressure 1 atm? |
| A. | 1.1 g/L |
| B. | 1.3 g/L |
| C. | 1.5 g/L |
| D. | 1.7 g/L |
| Answer» C. 1.5 g/L | |
| 265. |
A vessel contains air and vapor H₂O, if the partial pressure of vapor H₂O is 4 atm and pressure of air is 1 atm, what is the fraction of vapor H₂O in vessel? |
| A. | 0.25 |
| B. | 0.5 |
| C. | 0.75 |
| D. | 0.8 |
| Answer» D. 0.8 | |
| 266. |
39 grams of benzene (z = 1.4) is filled in a container of volume 10 liter at 27°C, what is the pressure of container? |
| A. | 1.7 atm |
| B. | 1.9 atm |
| C. | 2.2 atm |
| D. | 2.5 atm |
| Answer» B. 1.9 atm | |
| 267. |
A material’s mass is given by the equation, m = 32P^0.02/T^0.5, where T is in Kelvin, m is in Kg and P is in mm Hg, what is the mass of material at 127°C, 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 | |
| 268. |
For CaOCl₂ , the rate of evaporation is given by W = 325p^0.5M/T^1.5 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. | |
| 269. |
What is the unit of ‘a’ in RK equation? |
| A. | Liter/mole |
| B. | Atm(liter/mole) |
| C. | Atm(liter/mole)K^0.5 |
| D. | Atm(liter/mole)K |
| Answer» D. Atm(liter/mole)K | |
| 270. |
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 | |
| 271. |
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 | |
| 272. |
A process is carried out for the feed mixture of 50% air and 50% methane vapor, the compressor recovered 20% of methane, what is the exit pressure of the compressor, if the partial pressure of methane vapor is 25 mm Hg? |
| A. | 56.3 mm Hg |
| B. | 78.9 mm Hg |
| C. | 92.1 mm Hg |
| D. | 98.7 mm Hg |
| Answer» B. 78.9 mm Hg | |
| 273. |
The partial pressure of a system at 49°C is 125 mm Hg and saturated ammonia vapor has partial pressure 20 mm Hg at 49°C, what is the fraction of ammonia vapor in the system? |
| A. | 0.04 |
| B. | 0.08 |
| C. | 0.16 |
| D. | 0.24 |
| Answer» D. 0.24 | |
| 274. |
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 | |
| 275. |
What is the shape of a P-V curve for ideal gas? |
| A. | Straight line |
| B. | Parabolic |
| C. | Hyperbolic |
| D. | Ellipse |
| Answer» D. Ellipse | |
| 276. |
What is the value of F for the B solution to remain 80% KOH if the recycle stream is removed? |
| A. | 123.1 mole/hr |
| B. | 666.5 mole/hr |
| C. | 988.4 mole/hr |
| D. | 1499.8 mole/hr |
| Answer» E. | |
| 277. |
88 grams of CO₂ at 27°C is applying 5 atm pressure, what is the volume occupied by it? |
| A. | 5.6 liter |
| B. | 7.9 liter |
| C. | 9.8 liter |
| D. | 12.2 liter |
| Answer» D. 12.2 liter | |
| 278. |
Which of the following is not true about ideal gas molecules? |
| A. | They have negligible size |
| B. | They do not have attractive forces |
| C. | They do not apply pressure |
| D. | They move in random motion |
| Answer» D. They move in random motion | |
| 279. |
10 KPa of water vapor at 27°C is saturated with air in a system, what is the mole fraction of air? |
| A. | 0.21 |
| B. | 0.46 |
| C. | 0.79 |
| D. | 0.91 |
| Answer» E. | |
| 280. |
Ethanol is burnt with required amount of O₂ at atmospheric pressure, the conversion of ethanol is 100%, what is the pressure at due point? |
| A. | 0.2 atm |
| B. | 0.4 atm |
| C. | 0.6 atm |
| D. | 0.8 atm |
| Answer» D. 0.8 atm | |
| 281. |
What is the value of H? |
| A. | 250 mole/hr |
| B. | 400 mole/hr |
| C. | 525 mole/hr |
| D. | 750 mole/hr |
| Answer» B. 400 mole/hr | |
| 282. |
What is the fraction of water vapor at 27°C and 1 atm, if the fraction of water vapor at 127°C and 1 atm is 0.8? |
| A. | 0.2 |
| B. | 0.4 |
| C. | 0.6 |
| D. | 0.8 |
| Answer» D. 0.8 | |
| 283. |
A system has partial pressure 500 mm Hg and the saturated water vapor has partial pressure 25 mm Hg, what is the fraction of water vapor in the system? |
| A. | 0.01 |
| B. | 0.05 |
| C. | 0.1 |
| D. | 0.5 |
| Answer» C. 0.1 | |
| 284. |
Answer the question for the following diagram.What is the value of C? |
| A. | 104.1 mole/hr |
| B. | 213.5 mole/hr |
| C. | 342.2 mole/hr |
| D. | 416.4 mole/hr |
| Answer» E. | |
| 285. |
If the vander waal equation has only one root, what is the relation between a and b? |
| A. | 729a = pb² |
| B. | 243a = pb² |
| C. | 81a = pb² |
| D. | 9a = pb² |
| Answer» B. 243a = pb² | |
| 286. |
A container has O₂ at 5 atm and molar volume 2 liter/mole, if a = 9.24 atm(liter/mole), b = 0.0907 liter/mole, what is the temperature of O₂? (Use vander waal equation) |
| A. | 140 K |
| B. | 150 K |
| C. | 170 K |
| D. | 190 K |
| Answer» D. 190 K | |
| 287. |
Which of the following is not the equation of state? |
| A. | Van der waals Equation |
| B. | Charles Equation |
| C. | Holborn Equation |
| D. | Peng Robinson Equation |
| Answer» C. Holborn Equation | |
| 288. |
What is the compressibility factor of water with density 1 g/liter at 27°C and 1 atm? |
| A. | 0.25 |
| B. | 0.59 |
| C. | 0.73 |
| D. | 0.91 |
| Answer» D. 0.91 | |
| 289. |
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 | |
| 290. |
Answer the below question for the following diagram.What is the value of P? |
| A. | 105.4 mole/hr |
| B. | 254.3 mole/hr |
| C. | 412.1 mole/hr |
| D. | 520.8 mole/hr |
| Answer» E. | |
| 291. |
What is the pressure of CO₂ at 0°C, molar volume = 4 liter/mole, if B = – 0.053 liter/mole, C = 0.0026 liter²/mole²? (Use virial equation, neglect higher terms) |
| A. | 2.4 atm |
| B. | 4.1 atm |
| C. | 5.5 atm |
| D. | 6.9 atm |
| Answer» D. 6.9 atm | |
| 292. |
A container is filled with a gas at 10 atm with molar volume 1 liter/mole, if B = – 0.053 liter/mole, C = 0.0026 liter²/mole², what is the temperature of gas? (Use virial equation, neglect higher terms) |
| A. | 128.2 K |
| B. | 156.9 K |
| C. | 198.5 K |
| D. | 243.6 K |
| Answer» B. 156.9 K | |
| 293. |
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 | |
| 294. |
CO with pressure 10 atm at 27°C is passed through a reactor with O₂, what is the pressure of CO₂ produced if 60% CO reacted? |
| A. | 2 atm |
| B. | 6 atm |
| C. | 10 atm |
| D. | 14 atm |
| Answer» C. 10 atm | |
| 295. |
Glucose with pressure 10 atm at 27°C is passed through a reactor with O₂, what is the temperature of CO₂ produced if pressure becomes thrice? |
| A. | 150 K |
| B. | 240 K |
| C. | 300 K |
| D. | 330 K |
| Answer» B. 240 K | |
| 296. |
N₂ with pressure 10 atm and H₂ with pressure 30 atm, both with volume 10 liter at 27°C are passed into a reactor, how many moles NH₃ is produced? |
| A. | 4 |
| B. | 8 |
| C. | 12 |
| D. | 16 |
| Answer» C. 12 | |
| 297. |
CH₄ with pressure 10 atm and volume 5 liter at 27°C is passed into a reactor with 50% excess oxygen, how many moles of oxygen is left in the products? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» B. 4 | |
| 298. |
H₂ at 27°C with pressure 10 atm and volume 10 liter is passed through a reactor with 6 moles of oxygen, if the limiting reagent reacts completely, how many moles of oxygen is left unreacted? |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 299. |
A mixture with 60% O₂ and 40% H₂ with pressure 5 Pa at 27°C at the rate 15 liter/s is passed through a reactor with another stream containing pure H₂ with pressure 10 Pa at 27°C at the rate 5 liter/s, what is the fraction of H₂ with pressure 5 Pa at 27°C in product? |
| A. | 0.2 |
| B. | 0.4 |
| C. | 0.6 |
| D. | 0.8 |
| Answer» E. | |
| 300. |
A gas mixture has 10% CH₄ with pressure 5 Pa at 27°C at the rate F, is passed through a reactor with another stream containing 60% CH₄ with pressure 5 Pa at -73°C at the rate 10 liter/s, if the percentage of CH₄ with pressure 5 Pa at 27°C in product is 80%, what is the value of F? |
| A. | 1 liter/s |
| B. | 1.4 liter/s |
| C. | 2 liter/s |
| D. | 2.6 liter/s |
| Answer» C. 2 liter/s | |