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.Management Sciences
Category: Chemical Reaction
The rate constant of a first order reaction depends on the ________________?
A. Concentration of the reactant
B. Temperature
C. Concentration of the product
D. Time
Which of the following is not endothermic in nature ?
A. Combustion of sulphur
B. Gasification of carbon
C. Thermal cracking of fuel oil
D. Steam reforming of naphtha
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 a semi-batch reactor _____________________?
A. Velocity of reaction can be controlled
B. Maximum conversion can be controlled
C. Both the reactants flow counter-currently
D. Residence time is constant
What is the unit of the rate constant in a chemical reaction in which 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on ?
A. Litre/mole.second
B. Moles/litre.second
C. Litre/mole
D. Litre/second
Rate of a chemical reaction is not affected by the____________________?
A. Catalyst
B. Temperature
C. Reactant’s concentration
D. Number of molecules of reactants taking part in the reaction
Maximum equilibrium conversion for endothermic reaction is obtained at the ______________ temperature?
A. Highest possible
B. Lowest possible
C. Intermediate
D. Room
Helium-mercury method is used for the measurement of the ________________ of the catalyst?
A. Surface area
B. Porosity
C. Pore volume
D. Both B. & C.
Consider the ‘n’ th order irreversible liquid phase reaction A → B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot ?
A. CA0 Vs t1/2
B. ln CA0 Vs t1/2
C. CA0 Vs ln t1/2
D. ln CA0 Vs ln t1/2
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