Mechanical Operations - Chemical Engineering Questions and Answers

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A belt conveyor used for the transportation of materials can

run upto 1 km.

travel at a speed upto 300 metres/minute.

handle materials upto 5000 tons/hr.

all (a), (b) and (c).

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Which of the following is not used as a surface active agent in a flocculation operation?

Sodium silicate

Quartz

Lime

Alumina

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__________ mill is not a revolving mill.

Pebble

Compartment

Cage

Tube

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For the transportation of ultrafine particles, the equipment used is a........conveyor.

belt

pneumatic

screw

none of these

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During filtration operation, the filtrate encounters the resistance of the

filter medium.

cake.

channel carrying the slurry to the upstream side of the cake and filtrate away from the filter medium.

all (a), (b) and (c)

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Filtration rate does not depend upon the

pressure drop & area of filtering surface.

resistance of the cake & the septum.

properties of the cake & the filtrate.

none of these.

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Which of the following is a fine crusher?

Blake jaw crusher

Gyratory crusher

Toothed roll crusher

Dodge jaw crusher

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__________ is a cohesive solid.

Wheat

Sand

Wet clay

none of these

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The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

3 to 4

8 to 10

10 to 15

15 to 20