EXAMIANS
If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.
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'Unreacted core model' represents the reaction involving
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In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ?
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If Thiele modulus is __________ , then the pore diffusion resistance in a catalyst may be considered as negligible.
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In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants)
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The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A)
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A catalyst in a chemical reaction __________ free energy change in the reaction.
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In the fluid catalytic cracker (FCC), the cracking reaction is __________ (i) and the regeneration is ____________ (ii)
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With increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion)
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Signal normally used to study non-ideal flow by stimulus response technique is __________ input.
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