Mechanical Operations 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? Copper sulphate Cresylic acid Sodium carbonate Calcium carbonate Copper sulphate Cresylic acid Sodium carbonate Calcium carbonate ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a Disc bowl centrifuge Sparkler filter Sharpies supercentrifuge Batch basket centrifuge Disc bowl centrifuge Sparkler filter Sharpies supercentrifuge Batch basket centrifuge ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Actual operating speed of a ball mill may vary from 65 to 80% of the critical speed. Which of the following duties would require the ball mill to be operated at maximum percentage of critical speed? Dry grinding of large particles (upto 1.25 cms) Wet grinding in high viscous suspension Wet grinding in low viscous suspension Dry grindng of large particles in un-baffed mills Dry grinding of large particles (upto 1.25 cms) Wet grinding in high viscous suspension Wet grinding in low viscous suspension Dry grindng of large particles in un-baffed mills ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sedimentation on commercial scale occurs in Thickeners Rotary drum filters Cyclones Classifiers Thickeners Rotary drum filters Cyclones Classifiers ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not a cutting machine? Dicers Knife cutters Slitters Tube mills Dicers Knife cutters Slitters Tube mills ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS