The rate of forward reaction, at chemical equilibrium is ______________ the rate of backward reaction?

A. More than
B. Less than
C. Equal to
D. Either B. or C.

With increase in temperature, the equilibrium _______________ rises in case of endothermic reaction?

A. Constant
B. Conversion
C. Both A. & B.
D. Neither A. nor B.

A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1m3 /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3. The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 k.mole/m3, the volume of the mixed flow reactor should be increased by a factor of_______________?

A. 7
B. 6
C. 3
D. 7/3

The catalyst in a second order reversible reaction increases the rate of the forward reaction___________________?

A. And decreases that of backward reaction
B. And backward reaction equally
C. Only
D. To a greater extent than that of the backward reaction

In the gaseous phase ammonia formation reaction (N2 + 3H2 ⇌ 2NH3), the value of the equilibrium constant depends on the_________________?

A. Total pressure of the system
B. Volume of the reactor
C. Temperature
D. Initial concentration of N2 and H2

With increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion)?

A. Increases
B. Decreases
C. Remain same
D. Increases linearly

______________ is the response curve for a step input signal from a reactor ?

A. S-curve
B. C-curve
C. I-curve
D. None of these

According to the ‘law of mass action’, the rate of reaction is directly proportional to the__________________?

A. Equilibrium constant
B. Volume of the reaction vessel
C. Nature of the reactants
D. Molar concentration of the reactants

What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?

A. 0
B. 1
C. 2
D. 3

In which of the following gaseous phase reversible reactions, the product yield cannot be increased by the application of high pressure ?

A. N2 + O2 ⇌ 2NO
B. PCl3 + Cl2 ⇌ PCl5
C. N + 3H2 ⇌ 2NH3
D. 2SO2 + O2 ⇌ 2SO3