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Chemical Reaction Engineering - Section 1 (5)

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Chemical Reaction Engineering - Section 1

The MCQs related to Chemical Reaction Engineering
are available in this section and you can solve the problems to test your skills.

33. 

Rate of a gaseous phase reaction is given by, 460-311-1 The unit of rate constant is

A. (atm)-1
B. (hr)-1
C. (atm)-1.(hr)-1
D. atm.(hr)-1

Answer: Option C

Explanation:

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34. 

Reaction rate equation for the reaction, 448-153-1 If S at is present in large excess, what is the order of this reaction?

A. zero
B. one
C. two
D. three

Answer: Option B

Explanation:

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35. 

The rate constant of a chemical reaction decreases by decreasing the

A. pressure
B. concentration of reactants
C. temperature
D. duration of reaction

Answer: Option C

Explanation:

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36. 

6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant ?

A. 100%
B. 95%
C. 75%
D. 20%

Answer: Option B

Explanation:

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37. 

A reactor is generally termed as an autoclave, when it is a

A. high pressure batch reactor.
B. atmospheric pressure tank reactor.
C. high pressure tubular reactor.
D. atmospheric pressure CSTR.

Answer: Option A

Explanation:

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38. 

Pick out the wrong statement pertaining to space velocity of flow reactors.

A. The unit of space velocity is (time)-1 .
B. The space velocity of 3 hr-1 means that three reactor volumes of feed at specified conditions are being fed into the reactor every hour.
C. The space velocity of 3 hr-1 means that one third reactor volume of feed at specified conditions are being fed into the reactor.
D. none of these.

Answer: Option C

Explanation:

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39. 

The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is

A. backmix reactor
B. plug flow reactor
C. series of CSTR
D. PFR in series

Answer: Option A

Explanation:

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40. 

In case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole.

A. 100
B. 1000
C. 10000
D. 100000

Answer: Option B

Explanation:

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