Chemical Engineering MCQs

6108 MCQs  (Page 172 of 611)

Pick out the wrong statement. Raoult’s law does not apply, when the______________________?
A. Size of component molecules are not equal
B. Attractive forces between like and unlike molecules in the solution are approximately equal
C. Component molecules are non-polar
D. Chemical combination or molecular association between unlike molecules takes place in the
Blowdown in a cooling tower____________________?
A. Means discarding a small fraction of circulating water to prevent and limit the concentration
Of Salt and impurities
B. Increases the scale forming tendencies of water
C. Is undesirable
For a binary mixture with low relative volatility________________?
A. Use steam distillation
B. Use molecular distillation
C. Use high pressure distillation
D. An azeotrope may be formed during distillation
The Hatta number is important in______________________?
A. Multi-component distillation
B. Binary distillation
C. Gas absorption without chemical reaction
D. Gas absorption with chemical reaction