Limiting reactant in a chemical reaction decides the____________________?

A. Rate constant
B. Conversion
C. Reaction speed
D. Equilibrium constant

The exit age distribution curve E(t) for an ideal CSTR with the average residence time, η, is given by__________________?

A. e-t/η
B. e-t/η/η
C. 1 – e-t/η
D. 1 – (e-t/η/η)

What is the value of ‘n’ if the reaction rate of the chemical reaction A → B, is proportional to CA n and it is found that the reaction rate triples, when the concentration of ‘A’ is increased 9 times ?

A. 1/2
B. 1/3
C. 1/9
D. 3

For all positive reaction orders for a particular duty ?

A. Mixed reactor is always larger than the plug-flow reactor
B. Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order
C. Reactor size is independent of the type of flow
D. Density variation during reaction affects design

In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffected by pressure changes ?

A. 2O3 ⇌ 3O2
B. N2 + O2 ⇌ 2NO
C. 2NO2 ⇌ N2O4
D. 2SO2 + O2 ⇌ 2SO3

Non-catalytic fluid-solid reactions are represented by _______________ model?

A. Continuous reaction
B. Unreacted core
C. Both A. and B.
D. Neither A. and B.

Which of the following holds good for an elementary reaction as shown in the bellow figure ?

A. The rate of disappearance of ‘Y’ is equal to the rate of appearance of ‘Z’
B. The rate of disappearance of ‘Y’ is equal to the rate of disappearance of ‘X’
C. Three times the rate of disappearance of ‘X’ is equal to the rate of appearance of ‘Z’
D. The rate of disappearance of ‘X’ is equal to the rate of appearance of ‘Z’

The exit age distribution of fluid leaving a vessel is used to know the__________________?

A. Activation energies of a reaction
B. Reaction mechanism
C. Extent of non-ideal flow in the vessel
D. None of these

The equilibrium constant ‘K’ of a chemical reaction depends on_________________?

A. Temperature only
B. Pressure only
C. Temperature and pressure
D. Ratio of reactants

With increase in temperature, the rate constant obeying Arrhenius equation____________________?

A. Increases
B. Decreases
C. Decreases exponentially
D. Can either increase or decrease; depends on the frequency factor