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) 1/(L√(K/D1)) ∞ L√(K/D1) 1 1/(L√(K/D1)) ∞ L√(K/D1) 1 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For a first order chemical reaction, the rate constant None ofthese Changes on changing the concentration units Is not a function of the unit of time Has unit of time⁻¹ None ofthese Changes on changing the concentration units Is not a function of the unit of time Has unit of time⁻¹ ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times. 16 8 12 32 16 8 12 32 ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering The rate of forward reaction, at chemical equilibrium is____the rate of backward reaction. More than Equal to Either B or C Less than More than Equal to Either B or C Less than ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the Pressure Temperature Neither A nor B Both A & B Pressure Temperature Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Chemical Reaction Engineering A stirred tank reactor compared to tubular-flow reactor provides All of these More uniform operating conditions Permits operation at the optimum temperature for a long reaction time Higher overall selectivity for a first order consecutive reaction All of these More uniform operating conditions Permits operation at the optimum temperature for a long reaction time Higher overall selectivity for a first order consecutive reaction ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS