If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is φs is defined by________________?

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Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is ______________ microns?

A. < 5 B. 10 to 25 C. < 74 D. > 1000...

Pick out the wrong statement?

A. Cumulative analysis for determining surface area is preferred over differential analysis, because of the assumption that “all particles in a simple fraction equal in size” is not needed for cumulative analysis unlike differential analysis B. A gate diagram is a plot of cumulative percent by weight undersize vs. the reciprocal of diameter, in which … Pick out the wrong statement?Read More...

In filtration, the use of ‘filter aid’ helps in__________________?

A. Reducing the filtration pressure B. Accelerating the rate of filtration C. Deplugging the filter medium D. Enhancing the cake porosity in case of a dense impermeable cake...

With increase in the capacity of screens, the screen effectiveness__________________?

A. Remains unchanged B. Increases C. Decreases D. Decreases exponentially...

A filter press is___________________?

A. A batch filter B. Not suitable, if the liquid is the main product C. Having prohibitively high maintenance cost D. Not suitable for wide range of materials under varying operating conditions of cake thickness and pressure...