Q. Exothermic reactions are best carried out in

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Q. The rate of a gas phase reaction is given by K . Cᴀ . Cʙ. If the volume of the reaction vessel is reduced to 1/4th of its initial volume, then the reaction rate compared to the original rate will be __________ times.

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Q. Rate of a chemical reaction is not affected by the

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Q. Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.

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Q. __________ resistance is not involved in the combustion of a carbon particle.

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Q. In an ideal P.F.R. at steady state conditions

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Q. Space time in flow reactor is

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Q. For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the

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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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