Q. For a first order reaction carried out in a plug flow reactor, the space time is

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Q. Second order consecutive irreversible reactions given below were carried out in a constant volume isothermal batch reactor with different initial feed compositions. Reactor temperature was same in all the cases. In experiments where the ratio of concentration of B to that of A in the initial feed was less than 0.5, the concentration of B increased first, reached a maximum and then declined with time. However, for all experiments where this concentration ratio was 0.5 or above, concentration of B decreased monotonically with time right from the beginning. What is the ratio of the two rate constants (k₁/k₂)?

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Q. A consecutive reaction given below, is characterised by

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Q. Pick the WRONG design guideline for a reactor in which the reactions, A → R (desired) and A → S (undesired) are to take place. The ratio of the reaction rates is as given below .

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Q. In case of a consecutive unimolecular type first order reaction given below, the concentration of component __________ increases continuously with time.

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Q. For the irreversible elementary first order reaction in parallel given below, a plot of Cy Vs. Cz will give a straight line having a slope of

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Q. The equilibrium constant for the reversible reaction given below, is affected by the

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Q. When the reaction is dominated by in-traparticle diffusion, the apparent order of reaction (nᴅ) as measured is related to the true order (n) as

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Q. An elementary liquid phase decomposition reaction given below is to be carried out in a CSTR. The design equation is

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Q. According to Arhenious equation of temperature dependency of rate constant for an elementary reaction

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Q. The order of the following reaction is

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Q. The half life period 't' of a zero order reaction given below, is equal to

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Q. The point selectivity of the product 'Y' in the below reaction, is equal to

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Q. The first order gas phase reaction given below, is conducted isothermally in batch mode. The rate of change of conversion with time is given by

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Q. The rate of a following autocatalytic reaction, is given by -rᴀ = k . Cᴀ . Cʙ. In this case, the

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Q. For the reaction given below, the rate of formation of Z is 0.2 gm mole/litre.hr. what is the rate of disappearance of X in gm mole/litre. hr ?

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Q. Which of the following is not a dimension-less group used in catalysis ?
(where, D = dispersion co-efficient, cm² /sec.
D1 = diffusion co-efficient; cm²/sec.
L = length of the reactor, cm.
t = time, sec.
v = volumetric flow rate, cm³/sec .
V = volume, cm³.)

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Q. Volume change for unimolecular type first order reaction given below, increases __________ with time.

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Q. Decomposition rate of a liquid 'X' which decomposes as per the following reaction is given by

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Q. From collison theory, the reaction rate constant is proportional to

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