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Question: During manufacture of H2SO4, the oxidation of SO2 to SO3 by oxygen is an en-dothermic reaction. The yield of SO3 will be maximised, if the
[A].

temperature is increased.

[B].

pressure is reduced.

[C].

temperature is increased and pressure is reduced.

[D].

temperature is reduced and pressure is increased.

Answer: Option D

Explanation:

No answer description available for this question.

Question: B.E.T. method of finding out surface area of a catalyst, uses the extension of __________ isotherm.
[A].

Langmuir

[B].

Freundlich

[C].

Tempkin

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: __________ gas is normally employed in B.E.T.method of finding out the surface area of catalyst.
[A].

N2

[B].

H2

[C].

CO2

[D].

He

Answer: Option A

Explanation:

No answer description available for this question.

Question: ‘Unreacted core model’ represents the reaction involving
[A].

combustion of coal particles.

[B].

roasting of sulphide ores.

[C].

manufacture of carbon disulphide from elements.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ catalytic reaction is involved in the thermal cracking of gas oil.
[A].

Homogeneous

[B].

Homogeneous non

[C].

Heterogeneous

[D].

Heterogeneous non

Answer: Option A

Explanation:

No answer description available for this question.

Question: Bulk diffusion in catalyst pore __________ with increase in pressure.
[A].

increases

[B].

decreases

[C].

remains unchanged

[D].

increases exponentially

Answer: Option B

Explanation:

No answer description available for this question.

Question: Effectiveness factor (E) of a catalyst pellet is defined as, Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)
[A].

tan hT/T

[B].

tan T/T

[C].

tan hT/tan T

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is __________ seconds.
[A].

1

[B].

3

[C].

1/3

[D].

32

Answer: Option B

Explanation:

No answer description available for this question.

Question: For a reaction of the type, , the rate of reaction (- rx) is given by
[A].

(K1+K1)CX

[B].

(K1+K2+K3)CX

[C].

K1CV – K2CX

[D].

(K1-K2)CX

Answer: Option C

Explanation:

No answer description available for this question.

Question: Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N2 + 3H2 2NH3.
[A].

increases

[B].

decreases

[C].

remains unchanged

[D].

unpredictable from the data

Answer: Option A

Explanation:

No answer description available for this question.