Chemical Engineering · all questions

Mechanical Operations
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

440

Questions

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Q341

Open question

To get a fine talc powder from its granules, the equipment used is

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Q342

Open question

Removal of activated carbon from glycerine is done by

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Q343

Open question

Pick out the wrong statement:

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Q344

Open question

For achieving maximum capacity of the ball mill, the ball charge should be equal to about __________ percent of the ball mill volume.

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Q345

Open question

Stamp mills are generally used for crushing

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Q346

Open question

For the preliminary breaking of hard rock, we use a

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Q347

Open question

Separation of materials into products based on the difference of their sizes is called

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Q348

Open question

For spheres, the specific surface shape factor is given by

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Q349

Open question

For a non-spherical particle, the sphericity

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Q350

Open question

Ultrafine grinders operate principally by

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Q351

Open question

During agitation of liquids, the

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Q352

Open question

Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is

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Q353

Open question

According to Bond crushing law, the work required to form particle of size 'D' from very large feed is (where

(\frac{S}{V})_{p}

and

(\frac{S}{V})_{f}

are surface to volume ratio of the product and feed respectively).

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Q354

Open question

Angle of nip of the crushing rolls does not depend upon the

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Q355

Open question

The distribution given by microscopic analysis of powder is

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Q356

Open question

For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately __________ microns.

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Q357

Open question

Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripherial velocity, m/sec. W = width of rolls, m. Dr = distance between rolls, ρ = density of material to be crushed, kg/m³. here V = πN.D, where N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m)

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Q358

Open question

__________ conveyor is the most suitable for long distance transportation of cold, non-abrasive granular/irregular shape/fine materials.

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Q359

Open question

Pick out the wrong statement pertaining to the roll crushers.

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Q360

Open question

Dry powdery solid materials are transported by a __________ conveyor.

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Mechanical Operationspractice.

Mechanical Operations
practice.