981. Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the ________________ number?
A. Sherwood
B. Schmidt
C. Peclet
D. Stanton

982. Adsorption is a unit operation which generally involves _______________ systems?
A. Liquid-solid
B. Gas-solid
C. Fluid-solid
D. Solid-solid

983. Molarity is defined as the number of gm moles of solute per ________________ of solvent?
A. Litre
B. kg
C. gm
D. c.c

984. Sand is dried in foundries in a ______________________drier?
A. Rotary
B. Fluidised bed
C. Vacuum
D. Spray

985. Which of the following equipments is not used for liquid dispersion ?
A. Wetted wall towers
B. Packed towers
C. Venturi scrubbers
D. Agitated vessels

986. The solvent used in liquid-liquid extraction should have _______________ less than one?
A. Selectivity
B. Distribution co-efficient
C. Both A. and B.
D. Neither A. nor B.

987. Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in ______________ tower?
A. Wetted wall
B. Bubble cap
C. Perforated tray
D. Packed

988. Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture ?
A. Anthracite coal
B. Rag paper
C. Bamboo
D. Inorganic solids

990. _______________ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower?
A. Sherwood
B. Stanton
C. Lewis
D. Peclet

NOTE
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