Chemical Reaction Engineering The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is Series of CSTR PFR in series Plug flow reactor Backmix reactor Series of CSTR PFR in series Plug flow reactor Backmix reactor ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.) None of these Thiele modulus (L√(k/D1) Reduced time (vt/V) Reactor dispersion number (D/vL) None of these Thiele modulus (L√(k/D1) Reduced time (vt/V) Reactor dispersion number (D/vL) ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The concentration of A in a first order reaction, A → B, decreases Exponentially with time Very abruptly towards the end of the reaction Linearly with time Logarithmically with time Exponentially with time Very abruptly towards the end of the reaction Linearly with time Logarithmically with time ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reason why a catalyst increases the rate of reaction is that, it Decreases the molecular collision diameter None of these Decreases the energy barrier for reaction Increases the activation energy Decreases the molecular collision diameter None of these Decreases the energy barrier for reaction Increases the activation energy ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An isothermal aqueous phase reversible reaction, P ⇋ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m³ .h is given by, r = 0.5CP - 0.125CR. A stream containing only P enters the 2.67 0.80 1.33 1.60 2.67 0.80 1.33 1.60 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering Exothermic reactions are best carried out in CSTR followed by a plug flow reactor CSTR in series A CSTR A plug flow reactor followed by CSTR CSTR followed by a plug flow reactor CSTR in series A CSTR A plug flow reactor followed by CSTR ANSWER DOWNLOAD EXAMIANS APP
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