Which one is correct? Explain short.

1. For what reason would you choose to run a reaction be run in semibatch mode? a. To increase the selectivity b. To have greater heat and mass transfer rates c. To reduce the work required by mixing d. Semi batch reactors are cheaper than batch reactors

2. For what reason would you choose to run a reaction be run in semibatch mode? a. To control the rate of heat generated b. They have greater heat and mass transfer rates c. To reduce the work required by mixing d. Semi batch reactors are cheaper than batch reactors

3. How can you increase the U value of a reactor ? a. Increase the heat transfer area b. Use a less conductive reactor wall material c. Improve the mixing of the reaction fluid d. Operate in semi batch mode

4. How can you increase the U value of a reactor ? a. Increase the heat exchanger area b. Use a less conductive material to separate the reactor from the heat transfer fluid c. Use a more conductive reactor wall material d. Operate in semi batch mode

5. Operating with a large temperature difference between the reactor and the heat transfer fluid can offer what advantage? a. It increases mixing b. It reduces the fouling of equipment c. It increases selectivity d. It increases the rate of heat transfer

6. As a safety precaution, when designing a reactor cooling system, the maximum rate of heat removal should be at least equal to a. The normal operation rate of heat generation b. The heat that would be generated at the adiabatic temperature rise temperature c. The heat that would be generated at the temperature corresponding to the adiabatic temperature rise and the reactor was filled to 100% of its volume d. It doesnt matter, in an emergency you can just turn off the feed stream

7. Solving a nonisothermal, adiabatic plug flow reactor questions involves what type of equations a. A single linear algebraic equation b. Two simultaneous nonlinear algebraic equations c. A single ordinary differential equation d. Two simultaneous ordinary differential equations

8.The energy required to pump the materials through the reactor is included in the energy balance in which term? a. T, Temperature b. H, Enthalpy c. F, Molar flowrate d. Ws, Shaft work