If Thiele modulus is ________________, then the pore diffusion resistance in a catalyst may be considered as negligible?

Related Mcqs:

________________ resistance is not involved in the combustion of a carbon particle?

A. Gas film B. Ash C. Chemical reaction D. None of these...

The following gas phase reaction is taking place in a plug flow reactor. A stoichiometric mixture of A and B at 300 K is fed to the reactor. At 1 m along the length of the reactor, the temperature is 360 K. The pressure drop is negligible and an ideal gas behaviour can be assumed. Identify the correct expression relating the concentration of A at the inlet (CA0), concentration of A at 1m (CA) and the corresponding conversion of A (X) ?

A. CA = 1.2 CA0 (1 – X)/(1 – 0.33X) B. CA = 1.2 CA0 (1 – X)/(1 – 0.5X) C. CA = 0.83 CA0 (1 – X)/(1 – 0.33X) D. CA = 0.83 CA0 (1 – X)/(1 – 0.5X)...

Pick out the correct statement ?

A. A chemical reaction accompanied by absorption of heat is called an exothermic reaction B. A chemical reaction accompanied by evolution of heat is called an endothermic reaction C. The rate constant for a first order reaction does not change on changing the concentration units D. Chemical equilibrium state is dynamic in nature...

For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by __________________?

A. A Dirac delta function B. A step function C. A ramp function D. None of the above...

Photo-chemical reactions occur in presence of ___________________?

A. Sunlight B. Darkness C. Solid catalysts D. Monochromatic radiation only...