MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 336 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
For most salts, the solubility increases with rise in temperature, but the solubility of __________ is nearly independent of temperature rise.$? |
| A. | Sodium chloride |
| B. | Sodium carbonate monohydrate |
| C. | Anhydrous sodium sulphate |
| D. | Hypo |
| Answer» B. Sodium carbonate monohydrate | |
| 252. |
Which of the following is not used for computing latent heat of vaporisation?$? |
| A. | Clausius-Clayperon equation |
| B. | Reference substance plots based on Durhing & Othmer plots |
| C. | Kistyakowasky's equation |
| D. | Hess |
| Answer» E. | |
| 253. |
One Newton is equal to __________ dynes.$? |
| A. | 10² |
| B. | 10³ |
| C. | 10‚Å¥ |
| D. | 10⁵ |
| Answer» E. | |
| 254. |
The density of a liquid is 1500 kg/m³. Its value in gin/litre will be equal to$? |
| A. | 1.5 |
| B. | 15 |
| C. | 150 |
| D. | 1500 |
| Answer» E. | |
| 255. |
40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is$? |
| A. | 1/2 |
| B. | 1/3 |
| C. | 1/4 |
| D. | 2/3 |
| Answer» C. 1/4 | |
| 256. |
Atomic __________ of an element is a whole number.$? |
| A. | Weight |
| B. | Number |
| C. | Volume |
| D. | Radius |
| Answer» C. Volume | |
| 257. |
For estimation of heat capacity of a solid compound, one can use$? |
| A. | Clayperon's equation |
| B. | Gibb's equation |
| C. | Kopp's rule |
| D. | Trouton's rule |
| Answer» D. Trouton's rule | |
| 258. |
The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour$? |
| A. | Measures the elevation in boiling point |
| B. | Is not dependent on the temperature |
| C. | Is a function of the liquid phase composition |
| D. | Measures the depression in freezing point |
| Answer» D. Measures the depression in freezing point | |
| 259. |
In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the$? |
| A. | Solute concentration |
| B. | Temperature |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 260. |
Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is$? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 261. |
The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vapourised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is$? |
| A. | 0.4 |
| B. | 0.6 |
| C. | 0.8 |
| D. | 0.2 |
| Answer» C. 0.8 | |
| 262. |
The pressure under which liquid and vapor can co-exit at equilibrium is called the __________ vapor pressure.$? |
| A. | Limiting |
| B. | Real |
| C. | Saturated |
| D. | Normal |
| Answer» D. Normal | |
| 263. |
Raoult's law is not applicable to the$? |
| A. | Solutes which dissociate or associate in the particular solution |
| B. | Concentrated solutions |
| C. | Both B & C |
| D. | Solutions containing non-volatile solute |
| Answer» D. Solutions containing non-volatile solute | |
| 264. |
Cp - Cv, for an ideal gas is equal to$? |
| A. | R |
| B. | R/2 |
| C. | 2R |
| D. | 3R |
| Answer» B. R/2 | |
| 265. |
At higher temperature, molal heat capacities of most of the gases (at constant pressure) __________ with increase in temperature.$? |
| A. | Increases |
| B. | Decreases |
| C. | Remains unchanged |
| D. | Increases linearly |
| Answer» B. Decreases | |
| 266. |
A vapor that exists above its critical temperature is termed as a __________ vapor.$? |
| A. | Saturated |
| B. | Unsaturated |
| C. | Gaseous |
| D. | Sub-cooled |
| Answer» D. Sub-cooled | |
| 267. |
Heat of reaction is not influenced by$? |
| A. | The route/method through which final products are obtained |
| B. | The physical state (e.g., solid, liquid or gaseous) of reactants and products |
| C. | Whether the reaction is carried out at constant temperature or constant pressure |
| D. | None of these |
| Answer» B. The physical state (e.g., solid, liquid or gaseous) of reactants and products | |
| 268. |
The temperature at which the second Virial co-efficient of a real gas is zero is called the$? |
| A. | Eutectic point |
| B. | Boyle temperature |
| C. | Boiling point |
| D. | Critical temperature |
| Answer» B. Boyle temperature | |
| 269. |
6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H‚ÇÇ produced will be __________ gm. gm.$? |
| A. | 0.5 |
| B. | 1 |
| C. | 3 |
| D. | 5 |
| Answer» B. 1 | |
| 270. |
Except for monoatomic gases, the molal heat capacity at constant volume for all gases is __________ Kcal/Kg mole.° K.$? |
| A. | 3 |
| B. | > 3 |
| C. | < 3 |
| D. | < 1 |
| Answer» C. < 3 | |
| 271. |
Which of the following ideal gas laws are not applicable to mixture of gases ?$? |
| A. | Amgat's law |
| B. | Dalton's law |
| C. | Boyle's law & Charle's Law |
| D. | None of these |
| Answer» D. None of these | |
| 272. |
Which of the following expressions defines the Baume gravity scale for liquids heavier than water?$? |
| A. | (141.5/G) - 131.5 |
| B. | 145 - (145/G) |
| C. | 200(G-1) |
| D. | (400/G) - 400 |
| Answer» C. 200(G-1) | |
| 273. |
In a binary liquid solution of components A and B, if component A exhibits positive deviation from Raoult's law, then component B$? |
| A. | Exhibits positive deviation from Raoult's law |
| B. | Exhibits negative deviation from Raoult's law |
| C. | Obeys Raoult's law |
| D. | May exhibit either positive or negative deviation from Raoult's law |
| Answer» B. Exhibits negative deviation from Raoult's law | |
| 274. |
Refluxing of part of the distillate in a fractionating column is a 'recycling operation', aimed primarily at$? |
| A. | Heat conservation |
| B. | Yield enhancement |
| C. | Product enrichment |
| D. | None of these |
| Answer» D. None of these | |
| 275. |
In a binary liquid system, the composition expressed as __________ is independent of the temperature & pressure.$? |
| A. | Kg of solute/kg of solvent |
| B. | Kg-mole of solute/kg-mole of solvent |
| C. | Kg-mole of solute/1000 kg of solvent |
| D. | All of the above |
| Answer» E. | |
| 276. |
Pick out the wrong unit conversion of heat transfer co-efficient.$? |
| A. | 1 kcal/m².hr.°C = 0.2048 BTU/ft².hr. °F. = 1.163 W/m².°K |
| B. | 1 kcal/m².hr.°K = 1.163 W/m².°C |
| C. | 1 W/m² . °C = 0.1761 BTU/ft².hr.°F |
| D. | 1 BTU/ft².hr.°F = 4.88 kcal/m².hr.°C = 20.44 kJ/m².hr°C = 5.678 W/m².°C |
| Answer» C. 1 W/m¬¨‚⧠. ¬¨‚àûC = 0.1761 BTU/ft¬¨‚â§.hr.¬¨‚àûF | |
| 277. |
According to the kinetic theory, the thermal conductivity of a monoatomic gas is proportional to$? |
| A. | T |
| B. | T0.5 |
| C. | T1.5 |
| D. | T2 |
| Answer» C. T1.5 | |
| 278. |
Which of the following is not a unit of pressure?$? |
| A. | Torr |
| B. | Newton/m² |
| C. | Parsec |
| D. | Ata, bar or pascal |
| Answer» D. Ata, bar or pascal | |
| 279. |
For a given mass of a gas at constant temperature, if the volume 'V' becomes three times, then the pressure 'P' will become$? |
| A. | P/3 |
| B. | 3P |
| C. | 9P² |
| D. | 9P |
| Answer» B. 3P | |
| 280. |
Refluxing of part of the distillate in a fractionating column is a 'recycling operation', aimed primarily at? |
| A. | Heat conservation |
| B. | Yield enhancement |
| C. | Product enrichment |
| D. | None of these |
| Answer» D. None of these | |
| 281. |
Which of the following expressions defines the Baume gravity scale for liquids heavier than water?? |
| A. | (141.5/G) - 131.5 |
| B. | 145 - (145/G) |
| C. | 200(G-1) |
| D. | (400/G) - 400 |
| Answer» C. 200(G-1) | |
| 282. |
Which of the following ideal gas laws are not applicable to mixture of gases ?? |
| A. | Amgat's law |
| B. | Dalton's law |
| C. | Boyle's law & Charle's Law |
| D. | None of these |
| Answer» D. None of these | |
| 283. |
The temperature at which the second Virial co-efficient of a real gas is zero is called the? |
| A. | Eutectic point |
| B. | Boyle temperature |
| C. | Boiling point |
| D. | Critical temperature |
| Answer» B. Boyle temperature | |
| 284. |
In a binary liquid solution of components A and B, if component A exhibits positive deviation from Raoult's law, then component B? |
| A. | Exhibits positive deviation from Raoult's law |
| B. | Exhibits negative deviation from Raoult's law |
| C. | Obeys Raoult's law |
| D. | May exhibit either positive or negative deviation from Raoult's law |
| Answer» B. Exhibits negative deviation from Raoult's law | |
| 285. |
Except for monoatomic gases, the molal heat capacity at constant volume for all gases is __________ Kcal/Kg mole.° K.? |
| A. | 3 |
| B. | > 3 |
| C. | < 3 |
| D. | < 1 |
| Answer» C. < 3 | |
| 286. |
6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H‚ÇÇ produced will be __________ gm. gm.? |
| A. | 0.5 |
| B. | 1 |
| C. | 3 |
| D. | 5 |
| Answer» B. 1 | |
| 287. |
Assume that benzene is insoluble in water. The normal boiling points of benzene and water are 80.1 and 100°C respectively. At a pressure of 1 atm, the boiling point of a mixture of benzene and water is? |
| A. | 80.1°C |
| B. | Less than 80.1°C |
| C. | 100°C |
| D. | Greater than 80.1°C but less than 100°C |
| Answer» E. | |
| 288. |
At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to? |
| A. | Decrease in mean free path |
| B. | Increased collision rate among molecules |
| C. | Increase in molecular attraction |
| D. | Increase in average molecular speed |
| Answer» D. Increase in average molecular speed | |
| 289. |
Concentration of a solution expressed in terms of __________ is independent of temperature.? |
| A. | Molarity |
| B. | Normality |
| C. | Molality |
| D. | None of these |
| Answer» D. None of these | |
| 290. |
Increasing the temperature of an aqueous solution will cause decrease in its? |
| A. | Molality |
| B. | Mole fraction |
| C. | Weight percent |
| D. | Molarity |
| Answer» E. | |
| 291. |
Which of the following is not a unit of pressure?? |
| A. | Torr |
| B. | Newton/m² |
| C. | Parsec |
| D. | Ata, bar or pascal |
| Answer» D. Ata, bar or pascal | |
| 292. |
According to the kinetic theory, the thermal conductivity of a monoatomic gas is proportional to? |
| A. | T |
| B. | T0.5 |
| C. | T1.5 |
| D. | T2 |
| Answer» C. T1.5 | |
| 293. |
For a given mass of a gas at constant temperature, if the volume 'V' becomes three times, then the pressure 'P' will become? |
| A. | P/3 |
| B. | 3P |
| C. | 9P² |
| D. | 9P |
| Answer» B. 3P | |
| 294. |
Pick out the wrong unit conversion of heat transfer co-efficient.? |
| A. | 1 kcal/m².hr.°C = 0.2048 BTU/ft².hr. °F. = 1.163 W/m².°K |
| B. | 1 kcal/m².hr.°K = 1.163 W/m².°C |
| C. | 1 W/m² . °C = 0.1761 BTU/ft².hr.°F |
| D. | 1 BTU/ft².hr.°F = 4.88 kcal/m².hr.°C = 20.44 kJ/m².hr°C = 5.678 W/m².°C |
| Answer» C. 1 W/m¬¨‚⧠. ¬¨‚àûC = 0.1761 BTU/ft¬¨‚â§.hr.¬¨‚àûF | |
| 295. |
In a binary liquid system, the composition expressed as __________ is independent of the temperature & pressure.? |
| A. | Kg of solute/kg of solvent |
| B. | Kg-mole of solute/kg-mole of solvent |
| C. | Kg-mole of solute/1000 kg of solvent |
| D. | All of the above |
| Answer» E. | |
| 296. |
N‚ÇÇ content in a urea sample was found to be only 42%. What is the actual urea content of the sample ? (molecular weight of urea = 60)? |
| A. | 80% |
| B. | 90% |
| C. | 95% |
| D. | 98% |
| Answer» C. 95% | |
| 297. |
Mass number of an atom is the sum of the numbers of? |
| A. | Neutrons and protons |
| B. | Protons and electrons |
| C. | Neutrons and electrons |
| D. | Both A & B |
| Answer» E. | |
| 298. |
A solution with reasonably permanent pH is called a/an __________ solution.? |
| A. | Ideal |
| B. | Non-ideal |
| C. | Buffer |
| D. | Colloidal |
| Answer» D. Colloidal | |
| 299. |
__________ equation relates latent heat and boiling point.? |
| A. | Antonie |
| B. | Kistyakowsky |
| C. | Kopp's |
| D. | Trouton's |
| Answer» E. | |
| 300. |
A fluid gas produced on burning furnace oil contains 0.15 gm mole of CO‚ÇÇ, 0.05 gm mole of oxygen and 0.80 gm mole of N‚ÇÇ. What is its molecular weight?$ |
| A. | 28.6 |
| B. | 30.0 |
| C. | 30.6 |
| D. | 32.6 |
| Answer» D. 32.6 | |