Chemical Reaction

A. Catalyst size is reduced or the catalyst diffusivity is reduced
B. Catalyst size is reduced or the catalyst diffusivity is increased
C. Catalyst size is increased or the catalyst diffusivity is reduced
D. Catalyst size is increased or the catalyst diffusivity is increased

A. Product yields and quality cannot be achieved in continuous process, because of long
residence time
B. Sales demand of product is not steady
C. Same equipment cannot be used for several processes of the same nature
D. All A., B. & C.

A. Catalyst
B. Temperature
C. Reactant’s concentration
D. Number of molecules of reactants taking part in the reaction

A. Water will evaporate
B. Equilibrium will not be attained
C. More ice will be formed
D. More water will be formed

A. Solid density
B. Pore volume
C. Surface area
D. All A., B. and C.

A. More
B. Less
C. Same
D. Either A. or B., depends on order of reaction

A. A highly exothermic reaction is to be controlled
B. Undesirable side reaction (at high concentration of one of the reactants) is to be avoided
C. A gas is to be reacted with liquid (e.g. hydrogenation of fat)
D. All A., B., and C.

A. CA0/2K
B. CA0/K
C. 0.693/K
D. 1/K

A. Film
B. Ash layer
C. Pore
D. None of these

A. Pressure and temperature only
B. Temperature and composition only
C. Pressure and composition only
D. Pressure, temperature and composition