Q241
Open questionIn a chemical reaction, __________ are conserved.
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Chemical Engineering · all questionsChemical Reaction Engineering
Chemical Reaction Engineering
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Q242
Open questionWith increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion)
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Q243
Open questionIf the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is
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Q244
Open questionIonic reactions occur in
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Q245
Open questionAutocatalytic reactions are best carried out in a
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Q246
Open questionHalf life period of a first order irreversible reaction A → B is
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Q247
Open questionWhich of the following is an autocatalytic reaction?
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Q248
Open questionWhich of the following is not endothermic in nature?
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Q249
Open questionFor the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.
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Q250
Open questionFor the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance.
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Q251
Open questionThe 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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Q252
Open questionReactions with high activation energy are
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Q253
Open questionThe 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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Q254
Open questionIn a semi-batch reactor,
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Q255
Open questionCatalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the
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Q256
Open questionIf the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the
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Q257
Open questionThe energy of activation of a chemical reaction
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Q258
Open questionBackmixing is most predominant in
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Q259
Open questionPick out the wrong statement.
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Q260
Open questionTime required for 50% decomposition of a liquid in an isothermal batch reactor following first order kinetics is 2 minutes. The time required for 75% decomposition will be about __________ minutes.
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