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.Management Sciences
Category: Chemical Reaction
A chemical reaction occurs, when the energy of the reacting molecules is ________________ the activation energy of reaction?
A. Less than
B. Equal to
C. More than
D. Equal to or more than
In case of calcination of limestone, CaCO3 CaO + CO2, the addition of more of CaO will result in _______________ in the concentration of CO2?
A. No change
B. Increase
C. Decrease
D. Unpredictable from the data
A high space velocity means that a given__________________?
A. Reaction can be accomplished with small reactor
B. Conversion can be obtained with a high feed rate
C. Both A. and B.
D. None of these
A photochemical reaction is _______________ light?
A. Initiated by
B. Accompanied with emission of
C. Catalysed by
D. Used to convert heat energy into
The following gas phase reaction is taking place in a plug flow reactor. A stoichiometric mixture of A and B at 300 K is fed to the reactor. At 1 m along the length of the reactor, the temperature is 360 K. The pressure drop is negligible and an ideal gas behaviour can be assumed. Identify the correct expression relating the concentration of A at the inlet (CA0), concentration of A at 1m (CA) and the corresponding conversion of A (X) ?
A. CA = 1.2 CA0 (1 – X)/(1 – 0.33X)
B. CA = 1.2 CA0 (1 – X)/(1 – 0.5X)
C. CA = 0.83 CA0 (1 – X)/(1 – 0.33X)
D. CA = 0.83 CA0 (1 – X)/(1 – 0.5X)
An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will__________________?
A. Be more in CSTR than in PFR
B. Be more in PFR than in CSTR
C. Be same in both cases
D. Depend on the temperature
For an autocatalytic reactor, the suitable reactor set up is__________________?
A. P.F. reactors in series
B. CSTR in series
C. CSTR followed by P.F. reactor
D. P.F. reactor followed by CSTR
Integral method for analysing the kinetic data is used _____________________?
A. When the data are scattered
B. For testing specific mechanisms with simple rate expressions
C. Both A. and B.
D. None of these
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