Chemical Engineering MCQs

A. Removal of fines from liquid
B. Liquids having high vapour pressure
C. Liquids of very high viscosity
D. None of these

A. Over cake
B. Over medium
C. Overall
D. None of these

A. Wet grinding achieves a finer product size than dry grinding
B. Its capacity decreases with increasing fineness of the products
C. Grinding cost and power requirement increases with increasing fineness of the products
D. All a., b. and c

A. Employs smaller balls
B. Gives finer size reduction but consumes more power
C. Has larger length/diameter ratio (>2 as compared to 1 for ball mill)
D. All a., b. and c.

A. Cm-1
B. Gm/cm-1
C. Cm/gm-1
D. Gm-1

A. Fine (e.g. – 200 mesh size coal)
B. Sticky (e.g. clay paste)
C. Small lumpy (e.g. grains and sand)
D. Free flowing

A. Electric spark
B. Corona discharge
C. Alternating current
D. None of these

A. Μ > tan α
B. Μ ≥ tan α
C. Μ > tan 2α
D. Μ ≤ tan α

A. 0.5
B. 1
C. < 1
D. √3

A. 4
B. 1/4
C. 1
D. 1/2