Q. Concentration of the limiting reactant (with initial concentration of a moles/litre) after time t is (a-x). Then 't' for a first order reaction is given by

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Q. Which of the following holds good for an elementary reaction given below:

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Q. The following gas phase reaction is taking place in a plug flow reactor.
A stoichiometric mixture of A and B at 300 K is fed to the reactor. At 1 m along the length of the reactor, the temperature is 360 K. The pressure drop is negligible and an ideal gas behaviour can be assumed. Identify the correct expression relating the concentration of A at the inlet (Cᴀ₀), concentration of A at 1m (Cᴀ) and the corresponding conversion of A (X).

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Q. The effectiveness factor for large value of Thiele modulus (L√(K/D₁)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D₁ = diffusion co-efficient, cm²/second)

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Q. Following isothermal kinetic data are obtained in a basket type of mixed flow reactor for a porous catalyst. Determine the role of pore diffusion and external mass transfer processes.

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Q. For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.

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Q. Pick out the correct statement.

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Q. The dimensions of rate constant for reaction 3A → B are (l/gm mole)/min. Therefore the reaction order is

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Q. Pick out the correct statement

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Q. If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is

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Q. For a zero order chemical reaction, the

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Q. BET apparatus

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Q. Radioactive decay follows __________ order kinetics.

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Q. The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the __________ energy.

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Q. The increase in the rate of reaction with temperature is due to

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Q. A catalyst loses its activity due to

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Q. 'N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.

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Q. Specific rate constant for a second order reaction

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Q. A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length

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Q. The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is

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