Q. Cold shot cooling is only practical when the feed temperature is __________ than the reaction temperature.

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Q. The preferred reacting system for oxidation of o-xylene to phthalic anhydride is

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Q. In the hydrodealkylation of toluene to benzene, the following reactions occur:

C₇H₈ + H₂ → C₆H₆ + CH₄
2C₆H₆ ↔ C₁₂H₁₀ + H₂

Toluene and hydrogen are fed to a reactor in a molar ratio 1:5. 80% of the toluene gets converted and the selectivity of benzene(defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is

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Q. Catalyst is a substance, which __________ chemical reaction.

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Q. A rise in temperature

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Q. The enzyme which can catalyse the conversion of glucose to ethyl alcohol is

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Q. The conversion for a first order liquid phase reaction. A → B in a CSTR is 50%. If another CSTR of the same volume is connected in series, then the % conversion at the exit of the second reactor will be

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Q. What is the dispersion number for a CSTR?

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Q. Rate of a chemical reaction is independent of the concentration of the reactants for a __________ reaction.

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Q. With increase in temperature, the rate constant obeying Arhenious equation

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Q. Bulk diffusion in catalyst pore __________ with increase in pressure.

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Q. Pick out the correct statement.

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Q. The concentration of A in a first order reaction, A → B, decreases

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Q. The equilibrium constant of chemical reaction __________ in the presence of catalyst.

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Q. The order of a chemical reaction is

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Q. A chemical reaction occurs, when the energy of the reacting molecules is __________ the activation energy of reaction.

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Q. B.E.T. method of finding out surface area of a catalyst, uses the extension of __________ isotherm.

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Q. In a chemical reaction, repesented by, A → B , it is observed that the

(i) rate of reaction increases by a factor of 4 on doubling the concentration of the reactant.
(ii) rate of reaction increases by a factor of 9 on trebling the concentration of the reactant.

Then the rate of the reaction is proportional to(where, Cᴀ = contentration of the reactant)

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Q. An example of autothermal reactor operation is

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Q. For a packed bed reactor; the presence of a long tail in the residence time distribution curve is an indication of

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