A. 0
B. ∞
C. 1
D. 0.5
What is the selectivity index, if the grade of tailings & concentrate is the same ? Read More »
Mechanical Operations A. Feed material
B. Type of crushing machine
C. Both A. & B.
D. Neither A. nor B.
A. Mass
B. Volume
C. Arithmetic
D. Volume surface
______________ mean diameter of particles is given by Σ (xi/Dpi ⃗)? Read More »
Mechanical OperationsWho has stepped down as Chairman of the African Union on Feb 10 2019? Read More »
World Current Affairs MCQs A. Reduction ratio
B. Capacity
C. Both A. & B.
D. Neither A. nor B.
A. Solid-liquid mixing
B. Liquid-liquid mixing
C. Dispersion of liquid in liquid
D. Suspension of solid in liquid
Weber number is significant and is concerned with the_________________? Read More »
Mechanical Operations A. gm/cm2
B. cm/gm
C. cm/gm2
D. gm/gm
The unit of specific cake resistance is______________________? Read More »
Mechanical Operations A. Coarse
B. Intermediate
C. Fine
D. Ultrafine
Colloidal mills are used for ______________ grinding? Read More »
Mechanical Operations A. Parabola
B. Straight line
C. Hyperbola
D. Exponential curve
A. Enters the cyclone from the top
B. Is admitted tangentially at high velocity
C. Develops a helical motion inside the chamber
D. Both B. and C.
In the cyclone separator used for separation of dust from dust laden gas, the gas ? Read More »
Mechanical Operations