Chemical Reaction Engineering

Question: In the converter of the contact process for the manufacture of H2SO4 the equilibrium conversion of SO2 __________ (A) __________ with increase in temperature and __________ (B) __________ with increase in the mole ratio of SO2 to air.
[A].

(A) increases (B) decreases

[B].

(A) decreases (B) increases

[C].

(A) increases (B) increases

[D].

(A) decreases (B) decreases

Answer: Option B

Explanation:

No answer description available for this question.

Question: In the fluid catalytic cracker (FCC), the cracking reaction is __________ (A) and the regeneration is___(B) __________
[A].

(A) exothermic (B) endothermic

[B].

(A) exothermic (B) exothermic

[C].

(A) endothermic (B) enodthermic

[D].

(A) endothermic (B) exothermic

Answer: Option D

Explanation:

No answer description available for this question.

Question: A photochemical reaction is
[A].

accompanied with emission of light.

[B].

catalysed by light.

[C].

initiated by light.

[D].

all (a), (b) & (c).

Answer: Option C

Explanation:

No answer description available for this question.

Question: For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times.
[A].

8

[B].

12

[C].

16

[D].

32

Answer: Option C

Explanation:

No answer description available for this question.

Question: In case of calcination of limestone, CaCO3 CaO + CO2, the addition of more of CaO will result in __________ in the concentration of CO2.
[A].

no change

[B].

increase

[C].

decrease

[D].

unpredictable from the data

Answer: Option A

Explanation:

No answer description available for this question.

Question: For a __________ order reaction, the units of rate constant and rate of reaction are the same.
[A].

zero

[B].

first

[C].

second

[D].

fractional

Answer: Option A

Explanation:

No answer description available for this question.

Question: A back mix reactor is
[A].

suitable for gas phase reactions.

[B].

ideal at very low conversion.

[C].

same as plug flow reactor (PFR).

[D].

same as ideal stirred tank reactor.

Answer: Option D

Explanation:

No answer description available for this question.

Question: A batch reactor is suitable for
[A].

achieving cent percent conversion of reactants into products.

[B].

large scale gaseous phase reactions.

[C].

liquid phase reactions.

[D].

obtaining uniform polymerisation products in highly exothermic reactions.

Answer: Option C

Explanation:

No answer description available for this question.

Question: According to the ‘law of mass action’, the rate of reaction is directly proportional to the
[A].

equilibrium constant.

[B].

volume of the reaction vessel.

[C].

nature of the reactants.

[D].

molar concentration of the reactants.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Enzymes are destroyed, when the
[A].

temperature is very high,

[B].

reactant’s concentration is very high.

[C].

reactant’s concentration is very low.

[D].

reaction rate is independent of the reactant’s concentration.

Answer: Option A

Explanation:

No answer description available for this question.