Raw materials are charged in the iron blast furnace using____________________?
A. Bucket elevator
B. Skip hoist
C. Screw conveyor
D. None of these
Mechanical Operations
Pine oil used in froth floatation technique acts as a/an_____________________?
e oil used in froth floatation technique acts as a/an_____________________?
A. Collector
B. Modifier
C. Frother
D. Activator
_______________ is a cohesive solid ?
_______________ is a cohesive solid ?
A. Wheat
B. Sand
C. Wet clay
D. None of these
Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?
Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?
A. Bond’s crushing law
B. Kick’s law
C. Rittinger’s law
D. None of these
Use of ‘grinding aids’ is done in _______________ grinding?
Use of ‘grinding aids’ is done in _______________ grinding?
A. Dry
B. Wet
C. Ultrafine
D. Intermediate
In constant pressure filtration ?
In constant pressure filtration ?
A. Resistance decreases with time
B. Rate of filtration is constant
C. Rate of filtration increases with time
D. Rate of filtration decreases with time
Which of the following is the hardest material ?
Which of the following is the hardest material ?
A. Calcite
B. Quartz
C. Corundum
D. Gypsum
The process by which fine solids is removed from liquids is termed as _____________________?
The process by which fine solids is removed from liquids is termed as _____________________?
A. Decantation
B. Flocculation
C. Sedimentation
D. Classification
increasing the capacity of a screen _______________ the screen effectiveness?
increasing the capacity of a screen _______________ the screen effectiveness?
A. Decreases
B. Increases
C. Does not effect
D. None of these
The most suitable equipment for the transportation of 200 mesh size particles is a _______________?
The most suitable equipment for the transportation of 200 mesh size particles is a _______________?
A. Bucket elevator
B. Pneumatic conveyor
C. Screw conveyor
D. Belt conveyor