Q. For identical flow rate, feed composition and for elementary first order reactions, 'N' equal sized mixed reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for constant density systems. This is true, when the value of 'N' is

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Q. Helium-mercury method is used for the measurement of the __________ of the catalyst.

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Q. What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only ?

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Q. Pick out the wrong statement.

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Q. Arrhenious equation represents graphically the variation between the __________ and temperature.

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Q. __________ catalytic reaction is involved in the thermal cracking of gas oil.

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Q. Variables affecting the rate of homogeneous reactions are

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

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Q. A catalyst inhibitor

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Q. In chamber process of sulphuric acid manufacture in industry, the gas phase oxidation of SO₂ to SO₃ is accomplished by a __________ reaction.

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Q. If the rate of a chemical reaction becomes slower at a given temperature, then the

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Q. The conversion Xᴀ and residence time data are collected for zero order liquid phase reaction in a stirred tank reactor. Which of the following will be a straight line ?

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Q. The rate of the reaction, X → Y, quadruples when the concentration of 'X' is doubled. The rate expression for the reaction is, r = K Cₓⁿ, the value of 'n' in this case will be

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Q. The rate at which a chemical substance reacts is proportional to its

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Q. A plug-flow reactor is characterised by

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Q. For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good.

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Q. Space velocity

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Q. The rate of the chemical reaction A → B doubles as the concentration of A i.e.., Cᴀ is doubled. If rate of reaction is proportional to Cᴀⁿ, then what is the value of n for this reaction ?

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Q. A reaction which is catalysed by a base is catalysed by all substances which have a tendency to

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Q. For a homogeneous reaction of nth order, the dimension of the rate constant is given by

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