Questions and answers for exam Preparation

MCQs

Total Questions : 3241 | Page 320 of 325 pages

Question 3191. In an absorber, HETP does not vary with the____________________?

Flow rate of liquid
Flow rate of gas
Type and size of packing
None of these

Discuss Question

Answer: Option D. -> None of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3192. During drying operation, it is easier to remove the ________________ moisture ?

Equilibrium
Critical
Unbound
Bound

Discuss Question

Answer: Option C. -> Unbound
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3193. In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the__________________?

Temperature and pressure
Concentration
Nature of the constituents
None of these

Discuss Question

Answer: Option D. -> None of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3194. When the temperature and humidity of air is low, we usually use _______________ draft cooling tower?

Natural
Forced
Induced
None of these

Discuss Question

Answer: Option A. -> Natural
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3195. Water-ethyl alcohol solution can be concentrated (in respect of alcohol concentration) by ________________ distillation?

Atmospheric
Vacuum
High pressure
None of these

Discuss Question

Answer: Option B. -> Vacuum
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3196. In an interphase mass transfer process, the lesser the solubility of a given solute in a liquid, the higher are the chances that the transfer process will be_________________?

Liquid phase resistance-controlled
Gas phase resistance controlled
Impossible
Driven by a non-linear driving force

Discuss Question

Answer: Option B. -> Gas phase resistance controlled
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3197. In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG ______________ the absorption factor?

Increases with increase in
Is one at unity value of
Both A. and B.
Neither A. nor B.

Discuss Question

Answer: Option C. -> Both A. and B.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3198. If a1 and a2 are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement ?

a1 = a2
a1 = 2a2
a1 = 0.5 a2
None of these

Discuss Question

Answer: Option D. -> None of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3199. Solvent used in extractive distillation___________________?

Changes the relative volatility of the original components
Should be of high volatility
Should form azeotropes with the original components
All A., B. and C.

Discuss Question

Answer: Option A. -> Changes the relative volatility of the original components
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3200. If a two phase system is in physical equilibrium; then it means that, the_____________________?

Escaping tendency of each component from the liquid phase to the vapor phase is exactly equal to that from vapor phase to liquid phase
Temperature of the liquid phase is equal to that of the vapor phase
Total pressure throughout the liquid phase is equal to that throughout the vapor phase
All A., B. and C.

Discuss Question

Answer: Option D. -> All A., B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!