Related Questions

A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to
A Lose a proton
B Gain a proton
C Lose an electron
D None of these
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for
A Fast reactions in catalyst of small pore diameter
B Fast reaction in catalyst of large pore diameter
C Slow reactions in catalyst of small pore diameter
D Slow reactions in catalyst of large pore diameter
If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst
A Porosity is very important
B Porosity is of less importance
C Internal surface area is utilised efficiently
D None of these
For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.
A Physical
B Chemical
C Both A and B
D Neither A nor B
Kinetics of a solid catalysed reaction can best be studied in a __________ reactor.
A Batch
B Plug-flow
C Mixed
D None of these
For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor.
A Fixed
B Fluidised bed reactor followed by a fixed
C Fixed bed reactor followed by a fluidised
D Fluidised
Those substances which have so far not been resolved by any means into other substances of simpler form are called
A Atoms
B Compounds
C Elements
D Molecules
A triangle has a base x and an altitude y. A second triangle has a base twice the altitude of the first triangle, and an altitude twice the base of the first triangle. What is the area of the second triangle?
A 2xy
B 0.5xy
C 0.66xy
D 4xy
In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate
A Fully by direct bearing
B Fully through fastenings
C 50% by direct bearing and 50% through fastenings
D 75% by direct bearing and 25% through fastenings
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.
A Nine times
B Six times
C Four times
D Two times

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