Q. A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be __________ minutes.

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Q. What is the dispersion number for a plug flow reactor ?

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Q. The decomposition of A into B is represented by the exothermic reaction, A ↔ 2B. To achieve maximum decomposition, it is desirable to carry out the reaction.

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Q. The catalytic converter for conversion of SO₂ to SO₃ by contact process should have a feed with SO₂ content between

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Q. If the pore diffusion controls in a catalytic reaction, the apparent activation energy Eₐ is equal to

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Q. The synthesis of proteins and metabolism in biological objects occur in the presence of biocatalyst called

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Q. Pick out the wrong statement.

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Q. Kinetics of a catalytic reaction can be best studied on a/an __________ reactor.

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Q. In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

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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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