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.Management Sciences
Category: Chemical Reaction
According to the ‘law of mass action’, the rate of reaction is directly proportional to the__________________?
A. Equilibrium constant
B. Volume of the reaction vessel
C. Nature of the reactants
D. Molar concentration of the reactants
The concentration of A in a first order reaction, A → B, decreases_____________________?
A. Linearly with time
B. Exponentially with time
C. Very abruptly towards the end of the reaction
D. Logarithmically with time
An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction ?
A. Is maximum at the inlet of the reactor
B. Goes through a maximum along the length of the reactor
C. Goes through a minimum along the length of the reactor
D. Is maximum at the exit of the reactor
____________ is the controlling step in a highly temperature sensitive fluid-solid non-catalytic reaction ?
A. Gas film diffusion
B. Ash diffusion
C. Chemical reaction
D. None of these
In an exothermic chemical reaction, the reactants compared to the products have__________________?
A. Higher temperature
B. More energy
C. Less energy
D. Same energy
In a CSTR _______________ varies with time ?
A. Reaction rate
B. Concentration
C. Both A. & B.
D. Neither A. nor B.
Shift conversion reaction_________________?
A. Converts N2 and H2 into NH3
B. Converts CO to CO2 with steam
C. Is non-catalytic
D. Is highly exothermic
For an isothermal variable volume batch reactor, the following relation is applicable for a first order irreversible reaction?
A. XA = k . t
B. [CA0/(1 + εA XA)] (dXA/dt) = k
C. -ln(1 – XA) = kt
D. εA . ln (1 – XA) = k . t
Space time equals the mean residence time__________________?
A. When the density of the reaction mixture is constant
B. For large diameter tubular reactor
C. For narrow diameter tubular reactor
D. For CSTR
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