In a continuous flow stirred tank reactor, the composition of the exit stream_________________?

A. Is same as that in the reactor
B. Is different than that in the reactor
C. Depends upon the flow rate of inlet stream
D. None of these

Which of the following is an autocatalytic reaction ?

A. Photochemical reactions
B. Microbial fermentation reaction
C. Enzyme fermentation reaction
D. Ammonia synthesis reaction

An exothermic reaction takes place in an adiabatic reactor. The product temperature ______________ reactor feed temperature?

A. Is always equal to
B. Is always greater than
C. Is always less than
D. May be greater or less than

Collision theory gives the rate constant for bimolecular reaction as___________________?

A. K α √T.e-E/RT
B. K α eE/RT
C. K α e-E/RT
D. None of these

A liquid decomposes by irreversible first order kinetics and the half life period of this reaction is 8 minutes. The time required for 75% conversion of the liquid will be ____________________ minutes?

A. 4
B. 8
C. 12
D. 16

The rate controlling step for the heterogeneous irreversible catalytic reaction A(g) + B(g) → C(g) is the surface reaction of absorbed A with absorbed B to give adsorbed C. The rate expression for this reaction can then be written as (where, KA, KB and KC are the equilibrium constants and is the rate constant of the rate controlling step) ?

A. k KA pApB / (1 + KApA + KBpB)
B. k KAKB pApB / (1 + KApA + KBpB)
C. k KAKB pApB / (1 + KApA + KBpB + KCpC)
D. k KAKB pApB / (1 + KApA + KBpB + KCpC)2

An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction ?

A. Is maximum at the inlet of the reactor
B. Goes through a maximum along the length of the reactor
C. Goes through a minimum along the length of the reactor
D. Is maximum at the exit of the reactor

Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in ___________________?

A. Blood
B. Saliva
C. Intestine
D. Gland

For a first order reaction carried out in a plug flow reactor, the space time is__________________?

A. (1/k) ln C0/C
B. (1/k) ln C/C0
C. k ln C0/C
D. k ln C/C0

In case of a/an ______________ chemical reaction, conversion increases with the rise in temperature?

A. Reversible exothermic
B. Irreversible exothermic
C. Irreversible endothermic
D. Reversible endothermic