A. Neither A. nor B.
B. Activation energy
C. Normal energy of reactants
B. CA = 1.2 CA0 (1 X)/(1 0.33X)
C. CA = 0.83 CA0 (1 X)/(1 0.5X)
D. CA = 1.2 CA0 (1 X)/(1 0.5X)
A. When the data are scattered
B. For testing specific mechanisms with simple rate expressions
D. None of these
B. Axial dispersion
C. None of these
D. Uniform mixing
B. 1 (e-t/?/?)
C. 1 e-t/?
D. e-t/?
A. ln k/2
B. k/2
C. ln 0.5/k
A. Plot of rA Vs CA is a straight line with slope k
B. Plot of rA Vs CA is a hyperbola
C. Rate of disappearance of reactant A is maximum, where CA = CB
B. More
C. Less
D. Either A. or B., depends on other factors
A. Does not affect photo-chemical reaction rates
C. Normally tends to increase the reaction rate
D. Does not affect a catalysed reaction
A. ? and ? are always equal
C. ? = ?, for a non-isothermal reactor
D. ? = ?, when the fluid density changes in the reactor
A. 0.637
C. 0.152
D. 0.253
A. Sales demand of product is not steady
B. idence time
D. Same equipment cannot be used for several processes of the same nature
E. Product yields and quality cannot be achieved in continuous process, because of long
B. More than
C. Equal to
D. Less than
A. Is a measure of the ease of the reaction
B. Is the maximum feed rate per unit volume of reactor for a given conversion
C. Describes the extensive operating characteristics of a tubular flow reactor
A. I, II, III
C. II, III, I
D. III, I, II
A. More than
C. Less than
D. Data insufficient; cant be predicted
B. A + A ? AA; AA + B ? A2B
C. A + B ? AB; AB + A ? A2B
D. A + B ? AB; AB + A ? A2B
E. #NAME?
A. CSTR followed by a PFR
C. CSTR followed by a PFR followed by a CSTR
D. PFR followed by a CSTR
B. k. t = ln a (a x)/x
C. k. t = x/a (a x)
D. k. t = ln (a x)/a
A. Second order
C. First order
D. Zeroth order
A. Lose a proton
D. Gain an electron
A. 6
C. 12
D. 18
B. None of these
C. Reaction mechanism
D. Activation energies of a reaction
A. Depends upon the flow rate of inlet stream
D. Is different than that in the reactor
B. A step function
C. A ramp function
D. A Dirac delta function
B. Stirred tank followed by tubular flow reactor (each of 2.5 litres)
C. Single stirred tank (v = 5 litres)
D. Two stirred tank (each of 2.5 litres) in series
B. rA = rB/2
C. rA = rB
D. rA = 2rB
A. keff = (k+ kg)/2
B. keff = k + kg
D. keff = (kkg)1/2
A. Very abruptly towards the end of the reaction
B. Linearly with time
D. Logarithmically with time
A. ?
C. 500
D. 750
B. Fluidised bed reactor
C. Batch reactor
D. Stirred tank reactor
A. Solid density
C. Porosity
D. Pore volume
A. 0.05 min-1
B. 0.03 hr-1
D. 0.03 sec-1
A. Tray
B. Packed
D. Spray
A. A gas is to be reacted with liquid (e.g. hydrogenation of fat)
B. Undesirable side reaction (at high concentration of one of the reactants) is to be avoided
D. A highly exothermic reaction is to be controlled
A. Protons
D. Neutrons
B. Increases
C. Remain same
D. May increase or decrease depending on the type of reaction
A. None of these
B. Static steady
D. Dynamic unsteady
A. 1.1 to 102
D. 0.1 to 0.9
A. Is non-catalytic
C. Converts N2 and H2 into NH3
D. Is highly exothermic
A. Initial concentration of the reactants remains constant
C. Entropy changes
D. Free energy of activation is lower
A. Extent of reaction
B. Initial concentration of the reactants
D. Time of reaction
A. > 150
B. 0
D. < 2100
A. Acts as a catalyst support
B. Itself has very high activity
D. All A., B. and C.
A. 2
B. 1
C. 3
B. 0.5
C. 1
D. 1.5
A. Temperature
B. Catalyst
D. Reactants concentration
A. Plug flow
B. Mixed flow
D. Tank in series
A. Methanol synthesis
C. Reformation of methane
D. Polymerisation of ethylene
A. Pressure
B. Composition of reactant
C. Temperature
Showing 201 to 250 of 472 mcqs