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
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
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
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
Which of the following is an exothermic reaction?
A Conversion of graphite to diamond
B Decomposition of water
C Dehydrogenation of ethane to ethylene
D None of these
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 an exothermic chemical reaction, the reactants compared to the products have
A Higher temperature
B More energy
C Less energy
D Same energy
A typical example of an exothermic reversible reaction conducted at high pressure in industry is
A Dehydration of ethanol
B Methanol synthesis
C Reformation of methane
D Polymerisation of ethylene
An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature.
A Is always equal to
B Is always greater than
C Is always less than
D May be greater or less than
The energy of activation of exothermic reaction is
A Zero
B Negative
C Very large compared to that for en-dothermic reaction
D Not possible to predict

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