For the gaseous reaction 2A → B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is___________________?

A. 1
B. -0.5
C. -0.25
D. 0

In case of a _____________ reactor, the composition in the reactor and at the exit of the reactor is the same ?

A. Semi-batch
B. Tubular
C. Batch
D. Back-mix

A photochemical reaction is _______________?

A. Accompanied with emission of light
B. Catalysed by light
C. Initiated by light
D. All A., B. & C.

The rate equation for the reaction represented by as shown in the bellow figure, is given by – rx = K1 . Cx/(1 + K2 Cx). At high value of Cx (i.e.., K2Cx > > 1), the order of the reaction and the rate constant are respectively___________________?

A. Zero order & K1/K2
B. Zero order & K1
C. First order & K1
D. First order & K1/K2

What is the order of chemical reaction as shown in the bellow figure, if it is found that the reaction rate doubles on doubling the concentration of B and also the reaction rate doubles when the concentrations of both A & B were doubled and quadrupled when the concentrations of both B & C were doubled ?

A. 1
B. 2
C. 3
D. 4

The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are_______________?

A. 2 & 1
B. 11 & 2
C. 2 & 2
D. 1 & 1

For a vapour phase catalytic reaction (A + B → P) which follows the Ridel mechanism and the reaction step is rate controlling, the rate of reaction is given by (reaction rate is irreversible, product also absorbs) ?

A. -rA = (k . PA . PB)/(1 + KAPA + KPPP)
B. -rA = (k . PA
2 – k1PP)/(1 + KAPA + KPPP)
C. -rA = (k . PA . PB)/(1 + KAPB + KBPB . KPPP)

The role of a catalyst in a chemical reaction is to change the__________________?

A. Equilibrium constant
B. Activation energy
C. Final products
D. Heat of reaction

The excess energy of the reactants required to dissociate into products is known as the ________________ energy?

A. Thermal
B. Activation
C. Threshold
D. Binding

The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is _____________________ that of mixed reactor?

A. Greater than
B. Equal to
C. Smaller than
D. Unpredictable from the data