A. Silica gel
B. Alumina
C. Fuller’s earth
D. Activated carbon
Related Mcqs:
- Which of the following adsorbent is used in the refining of sugar?
A. Bone charcoal
B. Wood charcoal
C. Silica gel
D. Activated clay - The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the_________________?
A. Differential heat of adsorption
B. Heat of wetting
C. Integral heat of adsorption
D. None of these - With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent ?
A. Increases
B. Decreases
C. Remain same
D. Either A. or B., depends on the system - At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbent __________________?
A. Increases
B. Decreases
C. Remains unchanged
D. Increases exponentially - As complete saturation of an adsorbent is approached, the differential heat of adsrop-tion approaches ____________________?
A. That of normal condensation
B. Integral heat of adsorption
C. Zero
D. None of these - The change in enthalpy per unit weight of adsorbed gas when adsorbed on gas free or “outgassed” adsorbent to from a definite concentration of adsorbate is called its_____________________?
A. Integral heat of adsorption
B. Heat of wetting
C. Differential heat of adsorption
D. Heat of normal condensation - Which of the following is not fixed by the process requirements, in the design of absorbers ?
A. Flow rate of the entering gas
B. Composition of the entering liquid
C. Terminal concentrations of gas stream
D. None of these - The most efficient cooling tower out of the following is_____________________?
A. Induced draft
B. Forced draft
C. Natural draft
D. Atmospheric - Which of the following has the same dimension as mass diffusivity ?
A. Momentum flux
B. Kinematic viscosity
C. Thermal diffusivity
D. Both B. and C. - Which of the following equipments is not used in liquid-liquid extraction ?
A. Pachuka tank
B. Agitated vessels
C. Centrifugal extractors
D. Packed towers
