Related Questions

When an exothermic reversible reaction is conducted adiabatically, the rate of reaction
A Continuously increases
B Continuously decreases
C Passes through a maximum
D Passes through a minimum
With increase in temperature, the equilibrium conversion of a reversible exothermic reaction
A Decreases
B Increases
C Remains unaffected
D Decreases linearily with temperature
Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor?
A Temperature should be high in the beginning and decreased towards the end of the reaction
B Very low temperature should be used throughout the reaction
C Very high temperature should be used throughout the reaction
D None of these
Fractional conversion __________ for an exothermic reversible chemical reaction, when the temperature is maximum.
A Increases
B Remains unchanged
C Decreases
D Unpredictable from the data
For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor.
A Fixed
B Fluidised bed reactor followed by a fixed
C Fixed bed reactor followed by a fluidised
D Fluidised
The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process.
A Isobaric
B Isothermal
C Adiabatic
D None of these
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.
A Equal to
B Less than
C More than
D None of these
Which of the following is a characteristic of an exothermic reaction?
A Release of heat
B Absorption of heat
C Doesn't involve any change in temperature
D None of the option is correct
What is an exothermic reaction?
A Reaction in which heat is released.
B Reaction in which heat is absorbed.
C Reaction in which neither heat is released nor absorbed.
D None
In case of staged packed bed reactors carrying out exothermic reaction, use
A High recycle for pure gas
B Plug flow for dilute liquid requiring no large preheating of feed
C Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature
D All of the above

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