A. Iron ores
B. Sulphide ores
C. Quartzite
D. None of these
Related Mcqs:
- Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator ?
A. Cresylic acid
B. Copper sulphate
C. Calcium carbonate
D. Sodium carbonate - Pine oil used in froth floatation technique acts as a/an_____________________?
A. Collector
B. Modifier
C. Frother
D. Activator - Pine oil and Cresylic acid are used as ______________ in the froth floatation process?
A. Frother
B. Collector
C. Depressor
D. Conditioner - In froth floatation, chemical agent added to cause air adherence is called___________________?
A. Collector
B. Frother
C. Modifier
D. Activator - Xanthates are used in the froth floatation process as a/an _______________________?
A. Conditioner
B. Frother
C. Collector
D. Activator - _______________ centrifuge is the most suitable for separation of non-friable crystals?
A. Tubular bowl
B. Disc-bowl
C. Perforated horizontal basket continuous
D. Suspended batch basket - The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a __________________?
A. Boundary mixer
B. Propeller agitator
C. Sharpies centrifuge
D. None of these - Bucket elevators are not suitable for the vertical lifting of __________ materials?
A. Fine (e.g. – 200 mesh size coal)
B. Sticky (e.g. clay paste)
C. Small lumpy (e.g. grains and sand)
D. Free flowing - Which of the following is the most suitable for cleaning of fine coal dust (<0.5 mm) ?
A. Trough washer
B. Baum jig washer
C. Spiral separator
D. Froth floatation - Which of the following is the most suitable for handling fibrous and dense slurries ?
A. Propeller agitator
B. Cone type agitator
C. Turbine agitator
D. Radial propeller agitator
