chemical engineering MCQs – Page 132

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs

2621. __________ conveyor is the most suitable for short distance transportation of non-abrasive loose materials like garbage, grain, food wastes etc?
0

A. Flight

B. Belt

C. Drag

D. Screw

2622. A widely used size reduction equipment for ______________ is Bradford breaker?
0

A. Coal

B. Wheat

C. Talc

D. Iron core

2623. Vertical transportation of materials can be done by a/an_______________?
0

A. Apron conveyor

B. Pneumatic conveyor

C. Bucket elevator

D. Both B. & C.

2624. Moisture can be removed from lubricating oil using_________________?
0

A. Clarifier

B. Sparkler filter

C. Tubular centrifuge

D. Vacuum leaf filter

2625. As the product becomes finer, the energy required for grinding___________________?
0

A. Decreases

B. Is same as for coarser grinding

C. Is 1.5 times that for coarser grinding

D. Increases

2626. In a zero order reaction, reactants concentration does not change with time and the_________________?
0

A. Time for half change is independent of the initial concentration

B. Reaction rate is trebled when the initial concentration is trebled

C. Time for completion of the reaction is independent of the initial concentration

D. Time for half change is half the time taken for completion of the reaction

2627. Which of the following must be stored in silos and not in open yard ?
0

A. None of these

B. High V.M. bituminous coal

C. Coke breeze

D. Sand

2628. Solid particles separation based on the difference in their flow velocities through fluids is termed as the__________________?
0

A. Clarification

B. Sedimentation

C. Classification

D. Elutriation

2629. Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is ________________ ?
0

A. 0.5

B. ?3

C. 1

D. ?2

2630. Run of mine (ROM) coal is crushed by a _________________________ for use in domestic ovens?
0

A. Hammer crusher

B. Ball mill

C. Tube mill

D. Jaw crusher

2631. Filtration should be stopped in a filter press, if the_________________?
0

A. Cake becomes very dense

B. Liquor stops flowing out to the discharge

C. Filtration pressure rises suddenly

D. Both B. & C.

2632. The material is crushed in a gyratory crusher by the action of__________________?
0

A. Attrition

B. Cutting

C. Impact

D. Compression

2633. Power consumption during turbulent flow in agitation tank is proportional to the ______________ of the liquid?
0

A. Viscosity

B. Thermal conductivity

C. Density

D. Surface tension

2634. In case of a hammer crusher ?
0

A. Reduction ratio can be varied by adjusting the distance from cage to hammers

B. All A., B. and C.

C. Maximum acceptable feed size is 30 cms

D. Crushing takes place by impact breaking

2635. The value of angle of nip is generally about__________________?
0

A. 16

B. 32

C. 64

D. 52

2636. Equivalent diameter of a particle is the diameter of the sphere having the same __________________?
0

A. Ratio of surface to volume as the actual volume

B. Ratio of volume to surface as the particle

C. None of these

D. Volume as the particle

2637. The most common filter aid is_________________?
0

A. Silica gel

B. Calcium silicate

C. Sodium carbonate

D. Diatomaceous earth

2638. Energy requirement (per unit mass of material crushed/ground) is highest for__________________?
0

A. Jaw crusher

B. Rod mill

C. Ball mill

D. Fluid energy mill

2639. An example of autothermal reactor operation is______________________?
0

A. Sulphur dioxide oxidation

B. Benzene oxidation

C. Ethylene oxidation

D. Ammonia synthesis

2640. Crushing efficiency of a machine ranges between __________________ percent?
0

A. 0.1 to 2

B. 5 to 10

C. 20 to 25

D. 50 to 70

Previous Next

Showing 2621 to 2640 of 8709 mcqs