In case of the irreversible unimolecular type, first order reaction, the fractional conversion at any time for constant volume system as compared to variable volume system is___________________?

A. More
B. Less
C. Same
D. Either A. or B., depends on other factors

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

Variables affecting the rate of homogeneous reactions are___________________?

A. Pressure and temperature only
B. Temperature and composition only
C. Pressure and composition only
D. Pressure, temperature and composition

If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the ________________ diffusion?

A. Film
B. Ash layer
C. Pore
D. None of these

The half life period ‘t’ of a zero order reaction as shown in the bellow figure, is equal to_________________?

A. CA0/2K
B. CA0/K
C. 0.693/K
D. 1/K

Semibatch reactor is preferred, when a/an__________________?

A. A highly exothermic reaction is to be controlled
B. Undesirable side reaction (at high concentration of one of the reactants) is to be avoided
C. A gas is to be reacted with liquid (e.g. hydrogenation of fat)
D. All A., B., and C.

In an exothermic reaction, the energy of the reacting substances as compared to that of products is____________________?

A. More
B. Less
C. Same
D. Either A. or B., depends on order of reaction

B.E.T. method can be used to determine the ___________________ of a porous catalyst?

A. Solid density
B. Pore volume
C. Surface area
D. All A., B. and C.

On application of pressure to the equilibrium system, ice ⇌ water; which of the following phenomenon will occur ?

A. Water will evaporate
B. Equilibrium will not be attained
C. More ice will be formed
D. More water will be formed

Rate of a chemical reaction is not affected by the____________________?

A. Catalyst
B. Temperature
C. Reactant’s concentration
D. Number of molecules of reactants taking part in the reaction