26. The increase in the rate of reaction with temperature is due to
27. A catalyst loses its activity due to
28. 'N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.
29. Specific rate constant for a second order reaction
30. For the irreversible elementary reactions in parallel viz , the rate of disappearance of 'X' is equal to
31. For an isothermal variable volume batch reactor, the following relation is applicable for a first order irreversible reaction.
32. For a zero order chemical reaction, the
33. BET apparatus
34. Radioactive decay follows __________ order kinetics.
35. The excess energy of reactants in a chemical reaction required to dissociate into products is termed as the __________ energy.
36. For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.
37. The dimensions of rate constant for reaction 3A B are (l/gm mole)/min. Therefore the reaction order is
38. If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is
39. Sulphuric acid is used as a catalyst in the
40. Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N2 + 3H2 2NH3.
41. The reason why a catalyst increases the rate of reaction is that, it
42. A first order irreversible reaction, A B is carried out separately in a constant volume as well as in a variable volume reactor for a particular period. It signifies that __________ in the two reactors.
43. When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is
44. In an ideal tubular-flow reactor
45. At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R?
46. __________ is the controlling step in a highly temperature sensitive fluid-solid non-catalytic reaction.
47. An autothermal reactor is
48. The rate constant of a first order reaction depends on the
49. A reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
50. The ratio of volume of mixed reactor to the volume of P.F.R. (for identical flow rate, feed composition and conversion) for zero order reaction is