Explore topic-wise MCQs in Chemical Reaction Engineering.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Reaction Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

The dispersion model is a ____

A. Two parameter model
B. One parameter model
C. No parameter model
D. Three parameter model
Answer» C. No parameter model
Discussion
2.

The range of reactor peclet number for open tubes is ____

A. 10<sup>6</sup>
B. 10<sup>10</sup>
C. 10<sup>2</sup>
D. 10<sup>3</sup>
Answer» B. 10<sup>10</sup>
Discussion
3.

If Da is diffusivity, CT is tracer concentration and UT is overall heat transfer coefficient, then the pulse tracer balance with dispersion is obtained as ____

A. ( frac{ ^2 C_T}{ z^2} frac{ (UC_T)}{ z} = frac{ C_T}{ z} )
B. D<sub>a</sub> ( frac{ ^2 C_T}{ z^2} frac{ (UC_T)}{ z} = frac{ C_T}{ z} )
C. D<sub>a</sub> ( frac{ ^2 C_T}{ z^2} + frac{ (UC_T)}{ z} = frac{ C_T}{ z} )
D. D<sub>a</sub> ( frac{ ^2 C_T}{ z^2} frac{ (UC_T)}{ z} = frac{ C_T}{ z} )
Answer» C. D<sub>a</sub> ( frac{ ^2 C_T}{ z^2} + frac{ (UC_T)}{ z} = frac{ C_T}{ z} )
Discussion
4.

The the species continuity equation for the axial dispersion model is ____

A. u ( frac{ C_A}{ z} = frac{ D_a}{ z} frac{ C_A}{ z} ) + (r<sub>A</sub>)C
B. u ( frac{ C_A}{ z} = frac{ D_a}{ z} frac{ C_A}{ z} ) + C
C. ( frac{ C_A}{ z} = frac{ D_a}{ z} frac{ C_A}{ z} ) + (r<sub>A</sub>)C
D. u ( frac{ C_A}{ z} = frac{ D_a}{ z} frac{ C_A}{ z} ) + (r<sub>A</sub>)
Answer» B. u ( frac{ C_A}{ z} = frac{ D_a}{ z} frac{ C_A}{ z} ) + C
Discussion
5.

The dispersion model accounts for ____

A. Deviation from ideal PFR
B. Modelling ideal CSTR
C. Combining batch and CSTR
D. CSTRs connected in parallel
Answer» B. Modelling ideal CSTR
Discussion
6.

The range of dispersion number for PFR is ____

A. ( frac{D}{uL} ) &lt; 0.1
B. ( frac{D}{uL} ) &lt; 0.01
C. ( frac{D}{uL} ) &gt; 1
D. ( frac{D}{uL} ) &gt; 10
Answer» C. ( frac{D}{uL} ) &gt; 1
Discussion
7.

The value of the Peclet number for CSTR is ____

A. 1
B. 0
C.
D. 2
Answer» C.
Discussion
8.

Which of the following represents Peclet number?

A. ( frac{Lu}{D} )
B. ( frac{u}{D} )
C. ( frac{u}{DL} )
D. ( frac{D}{uL} )
Answer» B. ( frac{u}{D} )
Discussion
9.

The value of the Dispersion coefficient for plug flow is ____

A. 1
B. 0
C.
D. 2
Answer» C.
Discussion
10.

If D is the fluid dispersion coefficient, L is the length of spread of tracer and u is the fluid velocity, then which of the following represents Dispersion number?

A. ( frac{L}{uD} )
B. ( frac{L}{D} )
C. ( frac{D}{uL} )
D. ( frac{Lu}{D} )
Answer» D. ( frac{Lu}{D} )
Discussion