Chemical Reaction Engineering 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) L√(K/D1) 1 1/(L√(K/D1)) ∞ L√(K/D1) 1 1/(L√(K/D1)) ∞ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reason why a catalyst increases the rate of reaction is that, it Decreases the energy barrier for reaction None of these Decreases the molecular collision diameter Increases the activation energy Decreases the energy barrier for reaction None of these Decreases the molecular collision diameter Increases the activation energy ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Rate constant 'k' and absolute temperature 'T' are related by collision theory (for bimolecular) as k ∝ T1.5 k ∝ T k ∝ exp(-E/RT) k ∝ √T k ∝ T1.5 k ∝ T k ∝ exp(-E/RT) k ∝ √T ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CAn, then what is the value of n for this reaction? 1 2 0.5 1 2 0.5 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering There is no correspondence between stoichiometry and the rate equation in case of a/an __________ reaction. Autocatalytic Non-elementary Multiple Elementary Autocatalytic Non-elementary Multiple Elementary ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants) A A-N A+N N A A-N A+N N ANSWER DOWNLOAD EXAMIANS APP
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