Chemical Reaction Engineering The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are Always irreversible Highly temperature sensitive Mostly irreversible Insensitive to temperature changes Always irreversible Highly temperature sensitive Mostly irreversible Insensitive to temperature changes ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The following gas phase reactions are carried out isothermally in a CSTR.A → 2R ; r₁ = K₁pA ;K₁ = 20mole/(sec.m³ bar)A → 3S ; r₂ = K₂ pA ;K₂ = 40mole/ (sec.m³ .bar)What is the maximum possible value of FR(mole/sec.) ? 43864 2 43832 43833 43864 2 43832 43833 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The energy of activation of a chemical reaction Is same as heat of reaction at constant pressure Both B and C Is the minimum energy which the molecules must have before the reaction can take place Varies as fifth power of the temperature Is same as heat of reaction at constant pressure Both B and C Is the minimum energy which the molecules must have before the reaction can take place Varies as fifth power of the temperature ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only? First Zero Third Second First Zero Third Second ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will Data in insufficient; can't be predicted Remain same Decrease Increase Data in insufficient; can't be predicted Remain same Decrease Increase ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m³ is fed to the reactor at the rate of 0.01 m³ /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k)is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature)) 1000 400 600 500 1000 400 600 500 ANSWER DOWNLOAD EXAMIANS APP
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