Chemical Reaction Engineering

Question: Ionic reactions occur in
[A].

solid state only

[B].

liquid state only

[C].

solutions

[D].

any state

Answer: Option C

Explanation:

No answer description available for this question.

Question: The catalyst in a second order reversible reaction increases the rate of the forward reaction
[A].

and decreases that of backward reaction.

[B].

and backward reaction equally.

[C].

only.

[D].

to a greater extent than that of the backward reaction.

Answer: Option B

Explanation:

No answer description available for this question.

Question: The catalyst in a first order chemical reaction changes the
[A].

equilibrium constant

[B].

activation energy

[C].

heat of formation of the product

[D].

heat of reaction

Answer: Option B

Explanation:

No answer description available for this question.

Question: In a reaction, the threshold energy is equal to (where, A = activation energy N = normal energy of reactants)
[A].

A

[B].

N

[C].

A+N

[D].

A-N

Answer: Option C

Explanation:

No answer description available for this question.

Question: For identical flow rate and feed composition, X plug flow reactors (PER) in series with a total volume V gives the same conversion as single
[A].

CSTR of volume V

[B].

PFR of volume V

[C].

CSTR of volume V/X

[D].

PFR of volume V/X

Answer: Option B

Explanation:

No answer description available for this question.

Question: Half life period of decomposition of a liquid ‘A’ by irreversible first order reaction is 12 minutes. The time required for 75% conversion of ‘A’ is __________ minutes.
[A].

18

[B].

24

[C].

6

[D].

12

Answer: Option B

Explanation:

No answer description available for this question.

Question: A consecutive reaction, , is characterised by
[A].

maxima in the concentration of A.

[B].

maxima in the concentration of B.

[C].

maxima in the concentration of C.

[D].

high exothermicity.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Half life period of a chemical reaction is proportional to CA0-1 , if the reaction is of __________ order.
[A].

first

[B].

zero

[C].

second

[D].

third

Answer: Option C

Explanation:

No answer description available for this question.

Question: An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will
[A].

be more in CSTR than in PFR.

[B].

be more in PFR than in CSTR.

[C].

be same in both cases.

[D].

depend on the temperature.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Half life period of a first order irreversible reaction A B is
[A].

k/2

[B].

ln k/2

[C].

ln 2/k

[D].

ln 0.5/k

Answer: Option C

Explanation:

No answer description available for this question.