Chemical Engineering MCQs

6108 MCQs  (Page 165 of 611)

Steam distillation is used to__________________?
A. Reduce the number of plates
B. Avoid thermal decomposition of a component
C. Increase the efficiency of separation
D. Increase the total pressure of distillation
Leaching of coarse solid lumps is also termed as _____________________?
A. Decoction
B. Dissolution
C. Percolation
D. Agitation and settling
Danckwerts developed the ____________________ theory?
A. Penetration
B. Surface renewal
C. Film
D. None of these
When an unsaturated air-water mixture is heated at constant pressure, then ____________________ ?
A. The partial pressure of water vapour increases
B. The specific humidity decreases
C. The relative humidity increases
D. The relative humidity decreases
Flash distillation is _______________________?
A. Same as differential distillation
B. Used for multi-component systems like crude refining
C. Same as simple distillation
D. Most useful for handling binary systems