Mechanical Operations Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills. Asbestos & mica Metalliferrous ores Non-metallic ores Basic slags Asbestos & mica Metalliferrous ores Non-metallic ores Basic slags ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A gravity decanter is meant for the separation of two __________ density. Immiscible liquids of same Miscible liquids of same Immiscible liquids of different Miscible liquids of different Immiscible liquids of same Miscible liquids of same Immiscible liquids of different Miscible liquids of different ANSWER DOWNLOAD EXAMIANS APP
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 Calcium carbonate Sodium carbonate Cresylic acid Copper sulphate Calcium carbonate Sodium carbonate Cresylic acid ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Production rate __________ with increased fineness, with a given energy input to the size reduction machine. Increases Decreases Remains unchanged May increase or decrease; depends on the machine Increases Decreases Remains unchanged May increase or decrease; depends on the machine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Angle of nip of the crushing rolls does not depend upon the Speed of the rolls Product size Feed size Diameter of the rolls Speed of the rolls Product size Feed size Diameter of the rolls ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Cement clinker is reduced to fine size by a Roll crusher Ball mill Hammer mill Tube mill Roll crusher Ball mill Hammer mill Tube mill ANSWER DOWNLOAD EXAMIANS APP
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