Chemical Engineering Exam 2 Questions With 100% Solved Solutions 2026
1. What is the formula for gauge pressure? Gauge Pressure = Absolute Pressure - Atmos-
pheric Pressure
2. Why does pressure drop in pipes? Due to friction as it flows through
3. Fluids naturally flow towards regions of Lower
pressure
4. Volumetric flow and mass flow are directly The average velocity of a fluid multiplied by
related to: the cross sectional area
5. Volumetric Flow The rate at which fluid flows
6. Centrifugal Pump A non-positive displacement pump that
moves a varying amount of fluid with each
rotation using an impeller blade
7. Positive Displacement Pump A type of pump that uses positive pressure to
move a fluid.
8. Three Fundamental Transfer Processes Momentum, heat, mass
9. When does mass transfer occur? Gradient in species concentration
10. What are the 2 basic modes of mass trans- Dittusion and convection
fer?
11. Momentum mass x velocity
12. Heat The energy transferred between objects that
are at ditterent temperatures
13. Mass A measure of the amount of matter in an ob-
ject
1/7
, Chemical Engineering Exam 2 Questions With 100% Solved Solutions 2026
14. Diffusion vs. Convection With convection there is an outside force (for
ex. a fan)
15. A tank contains a uniform concentration No because concentration gradient means its
of a chemical. The fluid in the tank is not mass transfer
pumped into another tank. In chemical
engineering, is this movement of fluid and
mass considered to be a form of mass
transfer?
16. If you drop a sugar cube in a glass of wa- Dittusion. The sugar molecules are gradually
ter, what is happening? migrating toward the regions of low sugar
concentration.
17. Which diffusion coefficients will be the Gases
largest?
18. What determines the size of a reactor? The kinetics of streams flowing in and out and
the rate of their reaction in the reactor
19. Plug Flow Reactor (PFR) A reactor with no axial mixing and fluid ele-
ments leave in the same order they arrived
20. Continuously Stirred Tank Reactor (CSTR) Feed stream enters the reactor where they
perfectly mix and we assume that the compo-
sition of species in the reactor is identical to
the outlet stream
21. Elementary Reactions Change from reactants to products that
proceed without identifiable intermediate
species forming
22. Thermal Potential Quantified by temperature
2/7
1. What is the formula for gauge pressure? Gauge Pressure = Absolute Pressure - Atmos-
pheric Pressure
2. Why does pressure drop in pipes? Due to friction as it flows through
3. Fluids naturally flow towards regions of Lower
pressure
4. Volumetric flow and mass flow are directly The average velocity of a fluid multiplied by
related to: the cross sectional area
5. Volumetric Flow The rate at which fluid flows
6. Centrifugal Pump A non-positive displacement pump that
moves a varying amount of fluid with each
rotation using an impeller blade
7. Positive Displacement Pump A type of pump that uses positive pressure to
move a fluid.
8. Three Fundamental Transfer Processes Momentum, heat, mass
9. When does mass transfer occur? Gradient in species concentration
10. What are the 2 basic modes of mass trans- Dittusion and convection
fer?
11. Momentum mass x velocity
12. Heat The energy transferred between objects that
are at ditterent temperatures
13. Mass A measure of the amount of matter in an ob-
ject
1/7
, Chemical Engineering Exam 2 Questions With 100% Solved Solutions 2026
14. Diffusion vs. Convection With convection there is an outside force (for
ex. a fan)
15. A tank contains a uniform concentration No because concentration gradient means its
of a chemical. The fluid in the tank is not mass transfer
pumped into another tank. In chemical
engineering, is this movement of fluid and
mass considered to be a form of mass
transfer?
16. If you drop a sugar cube in a glass of wa- Dittusion. The sugar molecules are gradually
ter, what is happening? migrating toward the regions of low sugar
concentration.
17. Which diffusion coefficients will be the Gases
largest?
18. What determines the size of a reactor? The kinetics of streams flowing in and out and
the rate of their reaction in the reactor
19. Plug Flow Reactor (PFR) A reactor with no axial mixing and fluid ele-
ments leave in the same order they arrived
20. Continuously Stirred Tank Reactor (CSTR) Feed stream enters the reactor where they
perfectly mix and we assume that the compo-
sition of species in the reactor is identical to
the outlet stream
21. Elementary Reactions Change from reactants to products that
proceed without identifiable intermediate
species forming
22. Thermal Potential Quantified by temperature
2/7
