Weight
Number
Volume
Radius
✅ The correct answer is option B.
Chemical Engineering MCQs
Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules
Do not lose energy on collision
Are above the inversion temperature
Do not exert attractive force on each other
Do work equal to loss in kinetic energy
✅ The correct answer is option C.
A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal
Kinetic energy
Intermolecular forces of attraction
Potential energy
Total energy
✅ The correct answer is option A.
A vapor whose partial pressure is less than its equilibrium vapor pressure is called a __________ vapor.
Saturated
Supersaturated
Superheated
None of these
✅ The correct answer is option C.
A vapor that exists above its critical temperature is termed as a __________ vapor.
Saturated
Unsaturated
Gaseous
Sub-cooled
✅ The correct answer is option C.
The OH⁻ concentration in a solution having pH value 3 is
10-Mar
10-Oct
10-Nov
Oct-13
✅ The correct answer is option C.
Which of the following gases will have the- highest kinetic energy per mole at the same pressure & temperature?
Chlorine
Nitrogen
Ethane
All of the above
✅ The correct answer is option D.
Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m³ . The diffusivity of aniline in air is 0.74xl0⁻⁵m²/s.The numerical value of mass transfer co-efficient is 7.4 x 10⁻³. The rate of evaporation of aniline is 2.97 x 10⁻⁴. Its units are
Mole/s
Mole/cm². s
Mole/m² . s
Kmole/m² . s
✅ The correct answer is option D.
Cp – Cv, for an ideal gas is equal to
R
R/2
2R
3R
✅ The correct answer is option A.
Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f₁ and that for smooth pipe is f₂. Pick out the correct statement.
f₁ = f₂
f₁ < f₂
f₁ > f₂
Data not sufficient to relate f₁ & f₂
✅ The correct answer is option C.