Q. The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are

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Q. If Thiele modulus is __________ , then the pore diffusion resistance in a catalyst may be considered as negligible.

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Q. Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the

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Q. The importance of diffusion in a catalyst are increased by

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Q. A back mix reactor is

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Q. Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?

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Q. The rate of the heterogenous catalytic reaction A(g) + B(g) → C(g) is given by
-rᴀ = k.Kᴀ.pᴀ.Pʙ/(1 + Kᴀ.Pᴀ + Kc.pc), where Kᴀ and Kc are the adsorption equilibrium constants.
The rate controlling step for this reaction is

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Q. In Langmuir treatment of adsorption,

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Q. Organic catalysts differ from the inorganic catalyst in the sense that the former is

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Q. An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction

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Q. Pick out the wrong statement.

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Q. For an ideal plug flow reactor, the value of Peclet number is

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Q. If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is

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Q. The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the

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Q. In a continuous flow stirred tank reactor, the composition of the exit stream

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Q. Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in __________ in conversion.

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Q. The energy balance equation over a tubular reactor under transient conditions is

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Q. The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called

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Q. The response curve for a step input signal from a reactor is called C-curve. The variance of C-curve in a 'tanks in series model' comprising of 'm' tanks is equal to

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Q. The eddy diffusivity for a liquid in plug flow must be

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