Chemical Reaction Engineering The energy of activation of a chemical reaction Is the minimum energy which the molecules must have before the reaction can take place Varies as fifth power of the temperature Both B and C Is same as heat of reaction at constant pressure Is the minimum energy which the molecules must have before the reaction can take place Varies as fifth power of the temperature Both B and C Is same as heat of reaction at constant pressure ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reactions of high molecularity are rare, because Many body collisions are not favoured energetically Of requirement of very large concentration for such reactions Of low probability of many body collisions Of very large activation energy of many bodies Many body collisions are not favoured energetically Of requirement of very large concentration for such reactions Of low probability of many body collisions Of very large activation energy of many bodies ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called Relative yield Operational yield Selectivity None of these Relative yield Operational yield Selectivity None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor. Batch Tubular flow Stirred tank Fixed bed Batch Tubular flow Stirred tank Fixed bed ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering An autothermal reactor is Most suitable for a second order reaction Most suitable for a reversible reaction Isothermal in nature Completely self-supporting in its thermal energy requirements Most suitable for a second order reaction Most suitable for a reversible reaction Isothermal in nature Completely self-supporting in its thermal energy requirements 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.) Reactor dispersion number (D/vL) Reduced time (vt/V) Thiele modulus (L√(k/D1) None of these Reactor dispersion number (D/vL) Reduced time (vt/V) Thiele modulus (L√(k/D1) None of these ANSWER DOWNLOAD EXAMIANS APP