Q. The conversion in a mixed reactor/accomplishing a reaction A → 3R is 50% when gaseous reactant 'A' is introduced at the rate of 1 litre/second and the leaving flow rate is 2 litres/second. The holding time for this operation is __________ second.

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Q. The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is __________ that of mixed reactor.

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Q. A space time of 3 hours for a flow reactor means that

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Q. Which of the following factors control the deactivation of a porous catalyst pellet ?

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Q. For the reaction, A + B → 2B + C,

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Q. Pick out the wrong statement.

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Q. In a reversible reaction, a catalyst increases the rate of forward reaction

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Q. Maximum equilibrium conversion for endothermic reaction is obtained at the __________ temperature.

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Q. When an exothermic reversible reaction is conducted adiabatically, the rate of reaction

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Q. For a first order chemical reaction in a porous catalyst, the Thiele modulus is 10. The effectiveness factor is approximately equal to

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Q. In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for

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Q. Helium-mercury method can be used to determine the __________ of the catalyst particle.

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Q. For the chemical reaction X → Y, it is observed that, on doubling the concentration of 'X', the reaction rate quadruples. If the reaction rate is proportional to Cₓⁿ, then what is the value of 'n' ?

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Q. Chemical reaction rate of a component depends upon the

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Q. In a semi-batch reactor

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Q. The equilibrium constant K of a chemical reaction depends on

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Q. The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the

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Q. Which of the following is not a unit of reaction rate ?

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Q. Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation ?

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Q. The sequence in which three CSTR's of volumes 5, 10 and 15 m³ will be connected in series to obtain the maximum production in a second order irreversible reaction is

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