Equilibrium of a chemical reaction as viewed by kinetics is a ______________ state?
A. Dynamic steady
B. Static steady
C. Dynamic unsteady
D. None of these
Month: February 2019
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 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
In Langmuir treatment of adsorption,_________________?
In Langmuir treatment of adsorption,_________________?
A. Whole surface of the catalyst does not have the same activity for adsorption and there is
attraction between the adsorbed molecule
B. Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect
on the rate of adsorption per site
C. All the adsorption does not take place by the same mechanism
D. Extent of adsorption is more than one complete monomolecular layer on the surface
A non-catalytic chemical reaction of the type as shown in the bellow figure is called a _____________ reaction?
A non-catalytic chemical reaction of the type as shown in the bellow figure is called a _____________ reaction?
A. Parallel
B. Series
C. Series-parallel
D. None of these
A first order homogeneous reaction of the type X → Y → Z (consecutive reaction) is carried out in a CSTR. Which of the following curves respectively show the variation of the concentration of X, Y and Z with time ?
A first order homogeneous reaction of the type X → Y → Z (consecutive reaction) is carried out in a CSTR. Which of the following curves respectively show the variation of the concentration of X, Y and Z with time ?
A. I, II, III
B. III, II, I
C. III, I, II
D. II, III, I
Which of the following will give maximum gas conversion ?
Which of the following will give maximum gas conversion ?
A. Fixed bed reactor
B. Fluidised bed reactor
C. Semi-fluidised bed reactor
D. Plug-flow catalytic reactor
Threshold energy in a reaction is equal to the_________________?
Threshold energy in a reaction is equal to the_________________?
A. Activation energy
B. Normal energy of reactants
C. Sum of A. & B.
D. Neither A. nor B.
For the irreversible elementary reactions in parallel as shown in the bellow figure, the rate of disappearance of ‘X’ is equal to_______________?
For the irreversible elementary reactions in parallel as shown in the bellow figure, the rate of disappearance of ‘X’ is equal to_______________?
A. CA (K1 + K2)
B. CA (K1 + K2)/2
C. CA . K1/2
D. CA . K2/2
Fractional conversion _____________ with increase in pressure for ammonia synthesis reaction i.e., N2 + 3H2 ⇌ 2NH3?
Fractional conversion _____________ with increase in pressure for ammonia synthesis reaction i.e., N2 + 3H2 ⇌ 2NH3?
A. Increases
B. Decreases
C. Remains unchanged
D. Unpredictable from the data
A first order irreversible reaction, A → B is carried out separately in a constant volume as well as in a variable volume reactor for a particular period. It signifies that _____________ in the two reactors?
A first order irreversible reaction, A → B is carried out separately in a constant volume as well as in a variable volume reactor for a particular period. It signifies that _____________ in the two reactors?
A. Both conversion as well as concentration are same
B. Conversion in both will be the same but concentrations will be different
C. Both the conversion as well as concentrations will be different
D. None of these