Chemical Reaction Engineering Half life period of a first order irreversible reaction A → B is Ln k/2 K/2 Ln 0.5/k Ln 2/k Ln k/2 K/2 Ln 0.5/k Ln 2/k ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The temperature dependence of reaction rate constant (K) by Arhenius law is given by K α √T . e-E/RT K α T . e-E/RT K α eE/RT K α e-E/RT K α √T . e-E/RT K α T . e-E/RT K α eE/RT K α e-E/RT ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by keff = (kkg)1/2 keff = (k+ kg)/2 keff = k + kg 1/keff = 1/k + 1/kg keff = (kkg)1/2 keff = (k+ kg)/2 keff = k + kg 1/keff = 1/k + 1/kg ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is PFR in series Plug flow reactor Series of CSTR Backmix reactor PFR in series Plug flow reactor Series of CSTR Backmix reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following resistances is not involved in a gas phase catalytic (gas- solid) reaction? Gas film and pore surface diffusion resistances for reactants Surface phenomenon resistance Ash resistance Gas film and pore surface diffusion resistances for products Gas film and pore surface diffusion resistances for reactants Surface phenomenon resistance Ash resistance Gas film and pore surface diffusion resistances for products ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to Lose an electron Gain a proton None of these Lose a proton Lose an electron Gain a proton None of these Lose a proton ANSWER DOWNLOAD EXAMIANS APP
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