In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for________________?

Related Mcqs:

Volume change for unimolecular type first order reaction as shown in the bellow figure, increases _____________ with time?

A. Linearly B. Exponentially C. Parabolically D. Logarithmically...

For a heterogeneous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate – rA0 is invariant with total pressure. The rate controlling step is______________________?

A. Surface Kc/(1 + TS) reaction between absorbed A and B in the gas phase B. Surface reaction between absorbed A and absorbed B C. Surface reaction between A in the gas phase and absorbed B D. Desorption of C...

The residence time distribution of an ideal CSTR is _____________________?

A. (1/η) exp (-t/η) B. η exp (-t/η) C. exp (-t/η) D. (1/η) (-t/η)...

For a first order chemical reaction in a porous catalyst, the Thiele modulus is 10. The effectiveness factor is approximately equal to ____________________?

A. 0 B. 1 C. 0.1 D. 0.5...

Pick out the wrong statement?

A. Catalytic activity of enzyme catalysed reactions which is affected by temperature, pH value & chemical agents, is maximum at a temperature of about 45°C B. Most of the enzyme catalysed reactions involve at least two substrates C. Enzymes help in increasing the activation energy of the reaction D. Equilibrium concentrations in enzyme catalysed reactions … Pick out the wrong statement?Read More...