Carbon black is pulverised in a_______________?
Carbon black is pulverised in a_______________?
A. Hammer crusher
B. Ball mill
C. Roll crusher
D. Gyratory crusher
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The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake)__________________?
The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake)__________________?A. ∝ ΔP
B. ∝ 1/ ΔP
C. ∝ √ΔP
D. Independent of ΔPGold ore concentration is mostly done using___________________?
Gold ore concentration is mostly done using___________________?A. Jigging
B. Tabling
C. Froth floatation
D. ElutriationThe equivalent diameter of channel of a constant non-circular cross-section of 3 cm by 6 cm will be _______________ cms?
The equivalent diameter of channel of a constant non-circular cross-section of 3 cm by 6 cm will be _______________ cms?A. 20
B. 12
C. 8
D. 2Crushing efficiency of a machine ranges between __________________ percent?
Crushing efficiency of a machine ranges between __________________ percent?A. 0.1 to 2
B. 5 to 10
C. 20 to 25
D. 50 to 70Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a__________________?
Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a__________________?A. Pug mill
B. Mixer-extruder
C. Banbury mixer
D. Muller mixerIn case of grinding in a ball mill__________________?
In case of grinding in a ball mill__________________?A. Wet grinding achieves a finer product size than dry grinding
B. Its capacity decreases with increasing fineness of the products
C. Grinding cost and power requirement increases with increasing fineness of the products
D. All A., B. and C