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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of_____________________?
A Electromagnets
B Cams or eccentric shafts
C Unbalanced flywheels
D Either A., B. or C.
Correct Answer: Either A., B. or C.
Number of particles in a crushed solid sample is given by (where, m = mass of particles in a sample, Vp = volume of one particle, ρ= density of particles) ?
A m/ρ . Vp
B m . ρ/Vp
C m . Vp/ρ
D Vp/m . ρ
Correct Answer: m/ρ . Vp
Ultrafine grinders operate principally by_________________?
A Slow compression
B Impact
C Attrition
D Cutting action
Correct Answer: Attrition
Sauter mean diameter is the same as the ______________ mean diameter?
A Mass
B Arithmetic
C Volume-surface
D Geometric
Correct Answer: Volume-surface
Rod mills employed for grinding_________________?
A Employ a steel shell having L/D ratio of 1.5 to 3.0
B Is useful for handling sticky materials
C Employ steel rods of 2-12 cms diameter extending over full length of the mill
D All A , B & C
Correct Answer: All A , B & C
Crushing efficiency of a machine ranges between __________________ percent?
A 0.1 to 2
B 5 to 10
C 20 to 25
D 50 to 70
Correct Answer: 0.1 to 2
_____________________ baffles are provided in ball mills ?
A Horizontal
B No
C Only two
D None of these
Correct Answer: Horizontal
To remove very small amount of tiny solid impurities from liquid, we use a_____________________?
A Pressure filter
B Vacuum filter
C Centrifugal filter
D Coagulant
Correct Answer: Coagulant
In case of a hammer crusher ?
A Crushing takes place by impact breaking
B Maximum acceptable feed size is 30 cms
C Reduction ratio can be varied by adjusting the distance from cage to hammers
D All A., B. and C.
Correct Answer: All A., B. and C.
Screen efficiency is______________________?
A Recovery/rejection
B Recovery
C Rejection
D None of these
Correct Answer: None of these
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