Q. An isothermal aqueous phase reversible reaction, P ↔ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m³ .h is given by, r = 0.5Cₚ - 0.125Cʀ. A stream containing only P enters the reactor. The residence time required (in hours) for 40% conversion of P is

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Q. Design of heterogeous catalytic reactor involves consideration of __________ steps.

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Q. What is the unit of the rate constant in a chemical reaction in which 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on ?

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Q. For a fluidised bed reactor, the most suitable/relevant model is a __________ model.

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Q. In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants)

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Q. Thermodynamic equilibrium constant in a system is affected by

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Q. The most suitable reactor for carrying out an auto-thermal reaction is a

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Q. Which of the following chemical reactions will be favoured by low pressure ?

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Q. Which of the following is an autocatalytic reaction ?

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Q. The performance of a cascade of CSTR's can be improved by adding

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Q. A multiple reaction may be classified as a __________ reaction.

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Q. Holding time for flow reactors is __________ the space time, for constant fluid density

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Q. Pick out the wrong statement.

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Q. The exit age distribution of fluid leaving a vessel is used to know the

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Q. From Arhenius law, a plot of logₑ K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is

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Q. In the converter of the contact process for the manufacture of H₂SO₄ the equilibrium conversion of SO₂ __________ (A) __________ with increase in temperature and __________ (B) __________ with increase in the mole ratio of SO₂ to air.

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Q. The time needed to achieve the same fractional conversion for particles of different sizes (d) when chemical reaction controls, is proportional to

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Q. Carrier in a catalyst increases its

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Q. When the reaction occurs in the diffusion controlled region, the apparent activation energy as measured is only __________ the true value.

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Q. An isothermal irreversible reaction is being carried out in an ideal tubular flow reactor. The conversion in this case will __________ with decrease in space time.

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