Mechanical Operations MCQ Questions & Answers | Chemical Engineering

A. $${\text{N}} \propto \frac{1}{{\sqrt {\text{D}} }}$$

B. $${\text{N}} \propto \sqrt {\text{D}} $$

C. $${\text{N}} \propto {\text{D}}$$

D. $${\text{N}} \propto \frac{1}{{\text{D}}}$$

A. Disks have very sharp edge

B. Solids are not deposited at the edge of the disk

C. Bulk of the solids are removed at the periphery of the disks

D. None of these

A. Size

B. Specific gravity

C. Terminal velocities in the same fluid & in the same field of force

D. None of these

A. Sedimentation

B. Flocculation

C. Dispersion

D. Centrifugation

A. 3.6 AVS.ρ

B. 3.6 A.V.ρ

C. 3.6 A.S.ρ

D. 3.6 AVS/ρ

A. $${{\text{D}}_{\text{p}}^2}$$

B. D_p

C. $$\frac{1}{{{{\text{D}}_{\text{p}}}}}$$

D. $$\frac{1}{{{\text{D}}_{\text{p}}^2}}$$

A. Gives less wear on chamber walls

B. Requires more energy

C. Increases capacity

D. Complicates handling of the product

A. Fibrous cloth

B. Woven wire screen

C. Punched plate

D. None of these

A. Jaw crusher

B. Hammer crusher

C. Ball mill

D. Tube mill

A. Decreases

B. Increases

C. Does not effect

D. None of these