A. Cleaning of coal
B. Concentration of iron ore
C. Concentration of pyrites
D. Water treatment
Related Mcqs:
- Reciprocal of sphericity is termed as the________________?
A. Specific surface ratio
B. Shape factor
C. Sauter diameter
D. Surface area per unit mass - The mechanism of size reduction by a hammer mill is by impact and attrition between the________________?
A. Grinding element & the housing
B. Feed particles
C. Both A. and B.
D. Neither A. nor B. - Filtration rate does not depend upon the________________?
A. Pressure drop & area of filtering surface
B. Resistance of the cake & the septum
C. Properties of the cake & the filtrate
D. None of these - Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the___________________?
A. Coagulation
B. Flocculation
C. Sedimentation
D. Clarification - Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about________________?
A. 1 to 2°
B. 2 to 5°
C. 5 to 10°
D. 10 to 15° - Float and sink test determines the possibility of cleaning of coal by a process based on the___________________?
A. Gravity separation
B. Wettability
C. Particle shape
D. None of these - Pine oil and Cresylic acid are used as ______________ in the froth floatation process?
A. Frother
B. Collector
C. Depressor
D. Conditioner - Gravity settling process is not involved in the working of a________________?
A. Hydrocyclone
B. Classifier
C. Dorr-thickener
D. Sedimentation tank - The process opposite to ‘dispersion’ is termed as the___________________?
A. Flocculation
B. Sedimentation
C. Filtration
D. None of these - Xanthates are used in the froth floatation process as a/an _______________________?
A. Conditioner
B. Frother
C. Collector
D. Activator
