Q. For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is

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Q. A chemical reaction is of zero order, when the reaction rate is (where, Cᴀ = concentration of reactant)

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Q. An imbalanced chemical reaction equation is against the law of

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Q. For the chemical reaction P → Q, it is found that the rate of reaction doubles as the concentration of 'P' is doubled. If the reaction rate is proportional to Cₚⁿ, then what is the value of 'n' for this chemical reaction ?

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Q. Which of the following is a characteristic of an ideal plug flow reactor ?

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Q. Velocity of a reaction depends upon the

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Q. Threshold energy in a reaction is equal to the

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Q. Pick out the wrong statement.

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Q. There is no correspondence between stoichiometry and the rate equation in case of a/an __________ reaction.

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Q. A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?

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Q. Which of the following is used for calcination of limestone and dolomite in industrial practice ?

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Q. The half life period of a first order reaction is given by (where, K = rate constant. )

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Q. Half life period of a chemical reaction is

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Q. In the gaseous phase ammonia formation reaction (N₂ + 3H₂ ↔ 2NH₃), the value of the equilibrium constant depends on the

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Q. Which of the following is a controlling factor in very fast heterogeneous reaction ?

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Q. Enzymes are destroyed, when the

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Q. For an autocatalytic reactor, the suitable reactor set up is

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Q. Ionic reactions occur in

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Q. Sometimes, batch process is preferred over continuous process, when the product

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Q. The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m³ is fed to the reactor at the rate of 0.01 m³ /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k) is

(Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100 kJ/kmole. K (may be assumed to be independent of temperature))

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