Relevant Competitive Tests:
For efficient grinding, ball mills must be operated__________________?
A. At a speed less than the critical speedCorrect Answer
B. At a speed more than the critical speed
C. At a speed equal to the critical speed
D. With minimum possible small balls
Correct Option: A. At a speed less than the critical speed
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Which of the following is a type of sedimentary rock?Which of the following rock favors petroleum formation?DLS stands For_______?RIH stands for ________?“The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements.” This is the statement of___________________?