If ΔG (free energy change) for a chemical reaction is very large and negative, then the reaction is_______________________?

A. Not feasible
B. Just feasible
C. Very much feasible
D. Unpredictable as ΔG is no measure of feasibility of a reaction

A reaction which is catalysed by a base is catalysed by all substances which have a tendency to_______________________?

A. Lose a proton
B. Gain a proton
C. Gain an electron
D. None of these

When a catalyst increases the rate of chemical reaction, the rate constant_____________________?

A. Decreases
B. Increases
C. Remain constant
D. Become infinite

What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only ?

A. Zero
B. First
C. Second
D. Third

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

The gas phase reaction 2A ⇌ B is carried out in an isothermal plug flow reactor. The feed consists of 80 mole % A and 20 mole % inerts. If the conversion of A at the reactor exit is 50%, then CA/CA0 at the outlet of the reactor is _______________________?

A. 2/3
B. 5/8
C. 1/3
D. 3/8

The preferred reacting system for oxidation of o-xylene to phthalic anhydride is _____________________?

A. Jacketed liquid phase CSTR
B. Jacketed steam heated multitubular reactor
C. Multitubular reactor with cooling
D. Multistage multitubular reactor with interstage cooling

For a zero order reaction, the concentration of product increases with the _____________________?

A. Increase of reaction time
B. Increase in initial concentration
C. Total pressure
D. Decrease in total pressure

The space time is equivalent to the holding time in a steady state mixed reactor for_____________________?

A. Non-isothermal gas reaction
B. Variable fluid density systems
C. Constant fluid density systems
D. Gas reactions with changing number of moles

The reaction A → B is conducted in an isothermal batch reactor. If the conversion of A increases linearly with holding time, then the order of the reaction is __________________?

A. 0
B. 1
C. 1.5
D. 2