Heat sensitive materials with very high latent heat of vaporisation may be economically separated using__________________?
Correct answer: A. Liquid extraction
- A. Liquid extraction
- B. Distillation
- C. Evaporation
- D. Absorption
Explanation
Liquid extraction avoids the large vaporisation duty required by distillation, which is especially important for heat-sensitive materials and mixtures with high latent heats. Distillation would be energy-intensive and could cause thermal degradation.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Mass Transfer Operations
669 free Mass Transfer Operations MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Mass Transfer Operations questions
In a moderately sized packed absorption tower, channelling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter ?
Tray spacing in a distillation column of dia 10-12 ft. used in petroleum refinery may be around _____________ inches?
In the absorption of ammonia in water, the main resistance to absorption is by the _________________ phase?
A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state ?
Rotary dryers cannot handle _______________ materials ?
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the _______________ moisture?