For coarse reduction of hard solids, use ____________________?
For coarse reduction of hard solids, use ____________________?
A. Impact
B. Attrition
C. Compression
D. Cutting
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Crushing of mineral particles is accomplished in a ‘cage mill’, when one or more alloy steel bars are revolved in opposite directions. It is a type of ______________ mill?
Crushing of mineral particles is accomplished in a ‘cage mill’, when one or more alloy steel bars are revolved in opposite directions. It is a type of ______________ mill?A. Impact
B. Roll
C. Vibratory
D. None of theseWhich of the following minerals is not subjected to magnetic separation method ?
Which of the following minerals is not subjected to magnetic separation method ?A. Rutile
B. Galena
C. Chromite
D. Siderite_____________ is the most suitable for compounding rubber and plastic solids ?
_____________ is the most suitable for compounding rubber and plastic solids ?A. Banbury mixer
B. Pan mixer
C. Pug mill
D. Charge can mixerVacuum filter is most suitable for the_______________?
Vacuum filter is most suitable for the_______________?A. Removal of fines from liquid
B. Liquids having high vapour pressure
C. Liquids of very high viscosity
D. None of theseTemperature of the product during ultrafine grinding_____________________?
Temperature of the product during ultrafine grinding_____________________?A. Increases
B. Decreases
C. Remain constant
D. May increase or decrease; depends on the material being groundSphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is ________________ ?
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is ________________ ?A. 0.5
B. 1
C. √2
D. √3