2. Which one is not among the typical diagraens for a chemical plant? (A)Block flow diagram (B) Process flow diagram (C) Bax flow diagram (D) Pipe and instrumentation diagram 3. Which of the following statement is false? (A) For a newly developed process, bach-wise operation may be suitable. (B) If a prodact experiences seasonal change in ins demand, it should be produced by a batch process. (C) For a process which is difficult in coetrol, batcb-wise operation is more suitable. (D) The term "utility" refers to the waste water generated ia the chemical plants, which should be carefully treated before being dischanged. 4. Which of the following sasement is false? (A) If an endothenmic reaction is operated in an adiabatic reactor, the temperature will be lower a the outlet esd. (B) For an equilbriam-limited reaction, incressing the reaction temperature always improves the kisetics. (C) For a paseons phase reaction, operating it with a stirred tuank reactor may be preferable. (D) The tesnperatare protile exhibits a maximum if operating an exnchermic reaction in a tabular reactor equipped with external cooling 5. When designing the reaction system using a packed-bed reactor, which of the following is not an inflaential factor? (A)The operation peessure (B) The way of heat supplyiremoval (C) The space velocity (D)The stiming speed 6. Which of the following stamements regarding recycle is true? (A) Be sure to recycle every unreacted reactant for minimizing waste. (B) The "recycle and purge arrangenent" is suitable to recover the valuable species from a gaseons sream. (C) Using excess amoum of a reactant leads to an enhanced conversion, and less looding for recychise (D) The unreacted liquid species should not be recycled as it needs to be separaced via distillation, which is very enerny intensive. 7. Which of the following reactions is not exohermic? (A) Partial oxidation of propylene. (B) Gasification of coal. (C) Polymerization of efinlene. (D) The reverse wates gas shift reaction (IWGSR). 8. Which of the following strategy is commercially ased for air sepuracion? (A) Cryogenic distillation. (B) Membrane separation. (C) Reactive distillation. (D) Pressure swing absorption. 9. Wben investigating the process economicx, which part of the following typically accounts for the gratest portion of the toeal cost? (A)The utility cost (B) The wasie treatment cost (C) The raw material cos (D) The capual cost 10. The following statements are teferring to a distillation column. Which one is not true? (A) For a regular column, a condenser is equipped at the column mop, while a reboiler is at the colume boenom (B) Ideally, vapor-liquid equilitrium is rached on euch plate intide the column. (C) Inside the column, the vapor travels upwanth, while the liquid goe downwart. (D) Restions are bot allowed in a disclllation column 11. Which unit can be used for pressurizing a liquid stream? (A) A campressor (B) A pump (C) A nurbine (D) A furnace 12. Amoog the following statements referring to the "recycle stream"', which one is coerect? (A) The excess (or unreacted) reactants shoold always be sepuraced and recycled. (B) When a gas recyclepurge structure is designed, the conponiehen in the necycle stream and the purge stream are identical. (C) Excess reactant enhances the reaction conversion, which lemals to less recycle flownate. (D) No maner how many reaktors are there in the process, there should be onty one recycle stran. 13. Regarding the relative volatility (a), which of the following stitement is ane? (a) An axeotropic mistare has a relative volanility close ts weity. (b) It is defined as the ratio of the vapor pressare of two compoomst. (c) If the relative volatility of component A over componens B is 1.02 , it means that A and B are theoretically not separable. (d) It is dimensionless. 14. Consider that an enothermic reversible moction A2B is operated in an adiabutic pucket-bed reactor. Which of the following statement is cortect? (A) The temperature at the reactor oullet is lower thio that at the inlet. (B) A temperature hot spot will be observed in the teuctoc. (B) A temperature hot spot will be observed in the eractor. (C) Increasing the system temperature enhances the buckward maktion (D) Increasing the systren pressure deteriocates the equilibrium conversion. 15. Which of the following statement is false for propinejpropylene discitletion? (A) It may reuire hundreds of stages for separation through distillation. (B) The distillation tower is divided into several segments for safety. (C) The operation pressure is typically around 20 bar in order to use cooling water an the condenser. (D) If waser presens in the propanepropylene mituure, the relative volatlity of propane is increased over that of propyleme, which improves the separation perforisance. 16. What is a flash unit used for? (A) Performing vaporliguid split. (B) Storing the overly-supplied product. (C) Prebeating the reactants. (D) Expanding the steam from higher pressure to a lower pressure. 17. Which of the following statements regarding heating is false? (A) Medium pressure steam heats a streain to a temperature greater than low pressure steam does. (B) The unit cost of electricity is geverter than that of high pressure steam. (C) If a stieaen is to be beated to 500C, high pressure steam should be wed. (D) Steam may be generated from cooling a process stream, given that the temperature is adequately high 18. In Level 0 of the Douglas model for process symitheis, which of the lollowing is not the necessary data being collected? (A) The desined production rate. (B) The processing constraints. (C) Physical properties of the components involved. (D) The amoant of labor required for running the plant. 19. Which of the following statements regarding the catalytic tubular reachor is false? (A) Catalyst may be deactivated after periods of operation. (B) Theoretically this kind of mactor can be scaled up by changing the caulyst loading. (C) Catalyst typically accounts for less than 30% of the toeal rector volume. (D) The pressare drop of the reuctor is increased if the catalyst particle is smaller in diameter. 20. When calculating the capital cont of the process unic(s), which of the following are not the necessary information to be comsidered? (A)The suitable materials (B) The operatiog conditions (i.e. temperature, pressure...etc) (C) The cost generated while suatting up (D) The capucity of the units