Chemical Engineering - Chemical Reaction Engineering

46. 

The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called

A. operational yield
B. relative yield
C. selectivity
D. none of these

Answer: Option C

Explanation:

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47. 

The response curve for a step input signal from a reactor is called C-curve. The variance of C-curve in a 'tanks in series model' comprising of 'm' tanks is equal to

A. m
B. 1/m
C. m
D. m2

Answer: Option B

Explanation:

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48. 

The eddy diffusivity for a liquid in plug flow must be

A. 1
B. 0
C.
D. between 0 and 1

Answer: Option B

Explanation:

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49. 

For multiple reactions, the flow pattern within the vessel affects the

A. size requirement
B. distribution of reaction products
C. both (a) and (b)
D. neither (a) nor (b)

Answer: Option C

Explanation:

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50. 

The rate expression for the gaseous phase reaction, CO + 2H2 CH3OH, is given by, . Which of the following is not possible ?

A. α = 1, β = 1, γ =1
B. α = 1, β = 2, γ = 1
C. α = 1/3, β = 2/3, γ = 1/3
D. α = 1/2, β = 1, γ = 1/2

Answer: Option A

Explanation:

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