_____________ gas is normally employed in B.E.T. method of finding out the surface area of catalyst?

Related Mcqs:

In a zero order reaction, reactants concentration does not change with time and the_________________?

A. Time for half change is half the time taken for completion of the reaction B. Time for half change is independent of the initial concentration C. Time for completion of the reaction is independent of the initial concentration D. Reaction rate is trebled when the initial concentration is trebled...

Overall rate of reaction in a heterogeneous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually ________________ the concentration of catalyst, if it does not entail a chain mechanism?

A. Proportional to B. Independent of C. Inversely proportional to D. Proportional to the square of...

The first order gas phase reaction as shown in the bellow figure is conducted isothermally in batch mode. The rate of change of conversion with time is given by________________?

A. dXA/dt = k1 (1 – XA)2 (1 + 2XA) B. dXA/dt = k1 (1 – XA) (1 + 0.5XA) C. dXA/dt = k1 (1 – XA) D. dXA/dt = k1 (1 – XA)/(1 + XA)...

The space time is equivalent to the holding time in a steady state mixed reactor for_____________________?

A. Non-isothermal gas reaction B. Variable fluid density systems C. Constant fluid density systems D. Gas reactions with changing number of moles...

For the reaction, A + B → 2B + C,___________________?

A. rA = rB B. rA = -rB C. rA = 2rB D. rA = rB/2...