Chemical Reaction Engineering MCQs

The time required to reduce the concentration of the reacting substance to half its initial value

Half of the space time of a reaction

Half of the residence time of a reaction

None of these

Plug flow

Dispersion

Mixed flow

Tank in series

First

Second

Third

Zero

Lose a proton

Gain a proton

Lose an electron

None of these

Increases

Decreases

Remain same

Becomes infinite

Consecutive or side

Parallel or side

Mixed

All of the above

Is always greater for plug-flow reactor than for the single CSTR of the same volume

Statement in A is wrong

Decreases with increasing conversion

Both A and C hold good

Normally tends to increase the reaction rate

Does not affect a catalysed reaction

Does not affect photo-chemical reaction rates

All of the above

It is a reversible reaction

It is an exothermic reaction

The energy of reacting molecules exceeds the activation energy by absorption of light

None of these

Autocatalytic

Photochemical

Consecutive

Zero order