A. Providing irregular grain size
B. Providing minimum percentage of voids
C. Having maximum possible points of contact
D. None of these
Related Mcqs:
- Powdery materials can be guarded against caking tendency on storage by_________________?
A. Providing irregular grain size
B. Providing minimum percentage of voids
C. Having maximum possible points of contact
D. None of these - The caking of crystals can be prevented by _____________________?
A. Maintaining high critical humidity
B. Maintaining low critical humidity
C. Coating the product with inert material
D. Both A. and C. - A binary mixture of benzene and cyclohexane is separated by___________________?
A. Flash vaporisation
B. Extractive distillation
C. Solvent extraction
D. Ordinary distillation - Surface renewal model of mass transfer was enunciated by___________________?
A. Toor and Marcello
B. Fick
C. Danckwerts
D. Stefan - JD factor for mass transfer is a function of Reynolds number. Mass transfer by molecular diffusion from a single drop to surrounding still air is given by___________________?
A. Nsh = 2
B. Nst = 2
C. Nsc = 2
D. None of these - Leaching of coffee from coffee beans is done by___________________?
A. Hot water
B. Hexane
C. Lime water
D. Dilute H2SO4 (hot) - Make up water is required in a cooling tower to replace the water lost by___________________?
A. Evaporation
B. Drift
C. Blowdown and leakage
D. All A., B. and C. - The overall mass transfer co-efficient for the absorption of SO2 in air with dilute NaOH solution can be increased substantially by___________________?
A. Increasing the gas film co-efficient
B. Increasing the liquid film co-efficient
C. Increasing the total pressure
D. Decreasing the total pressure - Separation of two or more components of a liquid solution cannot be achieved by___________________?
A. Fractional crystallisation
B. Liquid extraction
C. Absorption
D. Evaporation - Leaching of sugar from sugar beets is done by___________________?
A. Hot water
B. Hexane
C. Dilute H2SO4
D. Lime water
