The half-line period of a first-order reaction (t1/2) and the rate constant (k) are related by
A.t1/2 = k
B.t1/2 = 2.303/k
C.t1/2 = 0.693/k
D.t1/2 = 7.67/k
Category: Chemical Reaction Engineering Mcqs
The formation of water from H2(g) and O2(g) is an exothermic reaction because
A.H2(g) and O2(g) have a higher chemical energy than water
B.H2(g) and O2(g) have a higher temperature than water
C.H2(g) and O2(g) have a lower chemical energy than water
D.energy considerations do not arise
Equilibrium state is
A.dynamic
B.static
C.neither dynamic nor static
D.sometimes static and sometimes dynamic
Which one of the following statements about a chemical equation is true?
A.Mass is conserved
B.Mass as well as atoms are conserved
C.Atoms are conserved
D.Ions are conserved
N plug flow reactors in series with a total volume V gives the same conversion as a single plug flow reactor of volume V. The above statement is true for
A.zero-order reactions only
B.first-order reactions only
C.second-order reactions only
D.all reaction orders.
Reaction between neutral solution of barium chloride and sodium carbonate goes to completion because
A.the reaction is irreversible
B.sodium chloride is only sparingly soluble in water
C.barium carbonate is almost insoluble in water
D.the solubility of BaCI2 decreases in the presence of sodium carbonate
The optimum size ratio for two mixed reactors in series is found in general to be dependent on the kinetics of the reaction and on the conversion level. For reaction order more than one
A.the larger reactor should come first
B.the smaller reactor should come first
C.equal size reactors are best.
The space-velocity is the proper performance measure of flow reactors. The space-velocity has the units of
A.time
B.(tme)-1
C.velocity
D.(velocity)-1
The exit age distribution of fluid leaving a vessel is used
A.to study the reaction mechanism
B.to study the extent of non-ideal flow in the vessel
C.to know the reaction rate constants
D.to know the activation energies of a reaction.
