Explore topic-wise MCQs in Chemical Reaction Engineering.

This section includes 9 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 plot of -ln(1- ( frac{ V}{ _A V_0}) ) and time for first order reaction in a varying volume reactor is ____

A. <img alt="Plot of -ln(1- V AV0) &amp; time for first order reaction in volume reactor - option a" class="alignnone size-full wp-image-283967" height="241" sizes="(max-width: 243px) 100vw, 243px" src="https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10a.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10a.png 243w, https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10a-150x150.png 150w" width="243"/>
B. <img alt="Plot of -ln(1- V AV0) &amp; time for first order reaction in volume reactor - option b" class="alignnone size-full wp-image-283968" height="243" src="https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10b.png" width="238"/>
C. <img alt="Plot of -ln(1- V AV0) &amp; time for first order reaction in volume reactor - option c" class="alignnone size-full wp-image-283969" height="241" sizes="(max-width: 240px) 100vw, 240px" src="https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10c.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10c.png 240w, https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10c-150x150.png 150w" width="240"/>
D. <img alt="Plot of -ln(1- V AV0) &amp; time for first order reaction in volume reactor - option d" class="alignnone size-full wp-image-283970" height="243" src="https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10d.png" width="235"/>
Answer» C. <img alt="Plot of -ln(1- V AV0) &amp; time for first order reaction in volume reactor - option c" class="alignnone size-full wp-image-283969" height="241" sizes="(max-width: 240px) 100vw, 240px" src="https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10c.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10c.png 240w, https://www.sanfoundry.com/wp-content/uploads/2020/07/chemical-reaction-engineering-question-papers-q10c-150x150.png 150w" width="240"/>
Discussion
2.

State true or false.For negative values of A, there is a reduction in volume of the reaction mixture as the reaction proceeds.

A. True
B. False
Answer» B. False
Discussion
3.

The relation between rate and time for a zero order reaction in a variable volume reactor is expressed as ____

A. ( frac{C_{A0}}{ _A}ln( frac{V}{V_0}) ) = t
B. ( frac{1}{ _A} ln( frac{V}{V_0}) ) = kt
C. ( frac{C_{A0}}{ _A} ln( frac{V}{V_0}) ) = kt
D. ( frac{C_{A0}}{ _A} ln( frac{V}{CC_A}) ) = kt
Answer» D. ( frac{C_{A0}}{ _A} ln( frac{V}{CC_A}) ) = kt
Discussion
4.

The relationship between conversion and concentration for isothermal varying volume systems is ____

A. X<sub>A</sub> = ( frac{{1- frac{C_A}{C_{A0}}}}{1+( _A frac{C_A}{C_{A0}})} )
B. X<sub>A</sub> = ( frac{{1- frac{C_A}{C_{A0}}}}{1-( _A frac{C_A}{C_{A0}})} )
C. X<sub>A</sub> = ( frac{{1+ frac{C_A}{C_{A0}}}}{1+( _A frac{C_A}{C_{A0}})} )
D. X<sub>A</sub> = ( frac{{1+ frac{C_A}{C_{A0}}}}{1-( _A frac{C_A}{C_{A0}})} )
Answer» B. X<sub>A</sub> = ( frac{{1- frac{C_A}{C_{A0}}}}{1-( _A frac{C_A}{C_{A0}})} )
Discussion
5.

For the reaction A 2R containing 50% moles initially, the value of A is ____

A. 1
B. 0.75
C. 0.5
D. 0.9
Answer» D. 0.9
Discussion
6.

Final concentration of the reactant A in terms of conversion, for a variable volume batch reactor is ____

A. C<sub>A</sub> = ( frac{C_{A0}(1+ X_A)}{(1+ _A X_A)} )
B. C<sub>A</sub> = ( frac{C_{A0}(1 X_A)}{(1- _A X_A)} )
C. C<sub>A</sub> = ( frac{C_{A0}(1 X_A)}{(1+ _A X_A)} )
D. C<sub>A</sub> = ( frac{C_{A0}(1 X_A)}{( _A X_A)} )
Answer» D. C<sub>A</sub> = ( frac{C_{A0}(1 X_A)}{( _A X_A)} )
Discussion
7.

For the reaction A 4R, the value of A is ____

A. -3
B. 3
C. 4
D. 2
Answer» C. 4
Discussion
8.

The fractional change in volume of a system for variable volume systems, expressed in terms of the number of moles is ____

A. = ( frac{Change , in , number , of , moles , of , the , reaction , system , when , the , reaction , is , complete}{Total , number , of , moles , fed} )
B. = ( frac{Total , number , of , moles , fed}{Change , in , number , of , moles , of , the , reaction , system , when , the , reaction , is , complete} )
C. = ( frac{Number , of , moles , left , when , the , reaction , is , complete}{Total , number , of , moles , fed} )
D. = ( frac{Total , number , of , moles , fed}{Number , of , moles , left , when , the , reaction , is , complete} )
Answer» B. = ( frac{Total , number , of , moles , fed}{Change , in , number , of , moles , of , the , reaction , system , when , the , reaction , is , complete} )
Discussion
9.

State true or false.A variable volume reactor is the one in which the reaction proceeds by a change in number of moles at a given pressure and temperature.

A. True
B. False
Answer» B. False
Discussion