Industrial Chemistry Midterm
24
INDUSTRIAL CHEMISTRY MIDTERM EXAM NAME: _______________________DATE: _________ DIRECTION: ENCIRCLE THE LETTER THAT CORRESPONDS TO YOUR ANSWER. 1. In industrial chemistry, chemical reactions applied to industrial processing is called chemical ____. A. kinetics B. conversions C. manufacture D. innovation 2. Chemical engineering emerged as a separate discipline from chemistry and mechanical engineering in A. 1910 B. 1900 C. 1920 D. 1911 3. Physical operations necessary for manufacturing chemicals are called A. physical units B. unit conversions C. unit operations D. unit processes 4. The following are example of chemical conversions EXCEPT A. sulfonation B. heat transfer C. reduction D. ion exchange 5. Chemical conversions are similar in terms of the following EXCEPT A. energy change B. reaction time B. equilibrium D. profit 6. An easily managed chemical- conversion segregation is by A. large-scale plant B. multiple use of equipment C. specialized plant D. specialized equipment Use the ff. choices to answer item 7- 10. A.Softening B. Clarification C. Purification D. Ion exchange 7. A process which reduces the hardness of water is 8. The removal of organic matter and microorganism in water is called 9. A process of reducing the turbidity of water is called 10. A process of removal of salts using ionic polymer resins is called 11. When sodium-cation-exchanger is exhausted, it is temporarily taken out of service and backwashed, and regenerated by ______solution. A. HCl B. CaCl 2 C. NaCl D. MgCl 2 12. Which of the following exchangers can remove all kinds of cations? A. Na-polymer B. H-polymer C. zeolite D. chalk 13. Which of the following is an economical method of regenerating hydrogen-cation exchanger? A. HCl B. H 2 SO 4 C. HNO 3 D. NH 3 14. In water conditioning, acidic water is commonly neutralized by A. NaOH B. Na-zeolite C. CaCO3 D. chalk 15. Demineralization of softened water is performed by using A. cation-exchanger B. zeolite C. anion-exchanger D. HCl 16. Which of the following can be used to deminiralize silicic acid-containing water? A. weakly basic anion exchanger B. highly basic anion exchanger C. Na-cation exchanger D. H-cation exchanger 17. In water conditioning, weakly basic exchanger can be regenerated by the ff. EXCEPT A. caustic soda B. soda ash C. NH 4 OH D. zeolite 18. Lime-soda process uses what reagents A. Ca(OH) 2 B. Na 2 O C. MaCl 2 D. CaCO 3 19. How many moles of lime is needed to reduce the hardness of water due to MgSO 4 ? A. 1 B. 3 C. 2 D. 4 20. Water with 100ppm hardness due to Ca(HCO 3 ) 2 requires how many kg of lime? A. 124.7 kg B. 62.4 kg C. 103.1 kg D. 25 kg
-
Upload
john-hardin -
Category
Documents
-
view
214 -
download
0
Transcript of Industrial Chemistry Midterm
INDUSTRIAL CHEMISTRYMIDTERM EXAMNAME: _______________________DATE: _________DIRECTION: ENCIRCLE THE LETTER THAT CORRESPONDS TO YOUR ANSWER.1. In industrial chemistry, chemical reactions applied to industrial processing is called chemical ____.
A. kinetics B. conversions C. manufacture D. innovation
2. Chemical engineering emerged as a separate discipline from chemistry and mechanical engineering in
A. 1910 B. 1900 C. 1920 D. 19113. Physical operations necessary for manufacturing chemicals are called
A. physical units B. unit conversions
C. unit operations D. unit processes4. The following are example of chemical conversions EXCEPT
A. sulfonation B. heat transferC. reduction D. ion exchange
5. Chemical conversions are similar in terms of the following EXCEPT
A. energy change B. reaction timeB. equilibrium D. profit
6. An easily managed chemical-conversion segregation is by A. large-scale plant B. multiple use of equipment C. specialized plant D. specialized equipmentUse the ff. choices to answer item 7-10.
A.Softening B. ClarificationC. Purification D. Ion exchange
7. A process which reduces the hardness of water is8. The removal of organic matter and microorganism in water is called9. A process of reducing the turbidity of water is called10. A process of removal of salts using ionic polymer resins is called11. When sodium-cation-exchanger is exhausted, it is temporarily taken out of service and backwashed, and regenerated by ______solution.
A. HCl B. CaCl2 C. NaCl D. MgCl2
12. Which of the following exchangers can remove all kinds of cations?
A. Na-polymer B. H-polymer C. zeolite D. chalk13. Which of the following is an economical method of regenerating hydrogen-cation exchanger?
A. HCl B. H2SO4 C. HNO3 D. NH3
14. In water conditioning, acidic water is commonly neutralized by
A. NaOH B. Na-zeolite C. CaCO3 D. chalk15. Demineralization of softened water is performed by using
A. cation-exchanger B. zeolite C. anion-exchanger D. HCl
16. Which of the following can be used to deminiralize silicic acid-containing water?
A. weakly basic anion exchangerB. highly basic anion exchangerC. Na-cation exchangerD. H-cation exchanger
17. In water conditioning, weakly basic exchanger can be regenerated by the ff. EXCEPTA. caustic soda B. soda ash C. NH4OH D. zeolite18. Lime-soda process uses what reagents
A. Ca(OH)2 B. Na2O C. MaCl2 D. CaCO3
19. How many moles of lime is needed to reduce the hardness of water due to MgSO4?
A. 1 B. 3 C. 2 D. 420. Water with 100ppm hardness due to Ca(HCO3)2 requires how many kg of lime?
A. 124.7 kg B. 62.4 kg C. 103.1 kg D. 25 kg21. Which of the ff. water conditioning methods that uses cheaper lime and partially soften hard water?A. ion exchange B. deareation C. desalting D. cold-lime22. What is the first step in hot-lime-soda process? A. heating of raw water B. analysis of raw water C. pumping of lime slurry D. reaction of lime and soda23. Which of the following water conditioning is the most appropriate for boiler feedwater?
A. hot-lime-soda B. cold-lime C. ion exchange D. Na-zeolite
24. Which of the following can be used to pick up iron in circulating water in cooling systems and also is used to minimize corrosion?
A. trisodium phosphate B. Na hexametaphosphateC. zeolite D. lime
25. Which of the following is NOT used as protective salt to remove dissolved oxygen in boiler water?
A. chromates B. alkalies C. phosphates D. soda26. Dissolved oxygen in boiler water can be removed by the ff. methods EXCEPT
A. electrode polarization B. cold-lime C. organic inhibitors D. protective salts
27. Traces of oxygen in boiler water can be removed byA. hydrazine hydrate B. Fe C. CaCO3 D. phosphates
28. Which of the ff. can be used to remove silica in boiler water?
A. Na-zeolite B. hot-lime sodaC. H-cation exchanger D. activated magnesia
29. For highly saline water, which of the ff. is preferred method for desalination?
A. distillation B. multi-stage flash evaporationB. vapour compression D. reversed osmosis
30. To kill pathogens in the water, which of the ff. can be used?
A. activated carbon B. chloramines C. resins D. CaCl2
31. According to the theory of pyrolysis, the bonds that break first below 200 C are A. C-H linkages B. aliphatic C-C bonds
C. heterocycles D. aromatic bonds 32. The principal product of high and low temperature carbonization is
A. coal B. coke C. CO2 D. ethylene 33. Which of the following is NOT considered as by-products of carbonization or destructive distillation of coal?
A. hydrogen B. ammonia C. CH4 D. coke34. The first step in coking of coal is
A. crushing and screening of coalB. charging the coal to the hot ovenC. pyrolysis of coalD. H2S removal
35. In coking of coal, ammonia is removed asA. liquid B. gas C. salt D. semisolid
36. Coal tar is a mixture of compounds mostlyA. aliphatic B. aromatic C. gases D. inrganics
Use the ff. choices for items 37-39A.batch still B. continuous still C. continuous unit
37. A method of distillation of coal tar which uses a single distillation column 38. A method of distillation of coal tar with multiple columns with reboilers 39. An obsolete method of distillation of coal tarUse the following choices for items 40-43A.light oils B. middle oils C. heavy oils D. anthracene oils40. Contains naphathalene, phenol, and cresol41. Fractions from 250-300 deg C. 42. A fraction when washed with solvent to remove phenanthrene and carbazole , a solid remains43. Contains benzene, toluene, and homologs44. _____is the most widely used dehydrating agent for natural gas.A. alumina B. glycol C. silica gel D. sulphuric acid45. H2S and other sulphur compounds are undesirable in natural gas because it causes A. pollution B. corrosion C. foul odor D. all the above 46. Sulphur compounds in natural gas are converted to sulphur by A. Claus process B. cold-lime process C. Winkler process47. The oldest and the widely used solvent for H2S and CO2 removal in natural gas isA. monoethanolamine B. methanol C. diglycolamine D. propylene carbonate48. Which of the ff. is NOT a coal tar product?
A. benzene B. toluene C. ammonia D. naphthalene 49. A fuel gas that is made by passing air and stream through a bed of hot coal or coke is called
A. coke-oven gas B. water gas
C. blue gas D. producer gas 50. A fuel gas that produced by the reaction steam on incandescent coal or coke at 1000 deg C is called
A. blue gas B. syngas C. producer gas D. SNG Use the ff. choices for items 51-53
A.Lurgi process B. Winkler process C. Koppers-Tolzek process
51. Gasification system for syngas that uses fixed bed52. Gasification system for syngas that uses entrained flow53. Gasification system for syngas that uses fluidized bed54. Syngas can be converted to high-heat content gas called
A. SNG B. coke-oven gas C. LPG D. producer gas 55. In oil gasification, naphtha is mixed with steam in a ratio of ______and gasify the mixture, and subsequently is methanated.
A. 1: 1 B. 1: 2 C. 2: 1 D. 3: 1 56. The ff. are the most important commercial production of CO2 gas EXCEPT
A. recovery from syngas in ammonia productionB. recovery as by-product in SNG productionC. recovery from CaCO3
D. recovery from natural wells57. An adsorption process for concentrating CO2 that uses hot, concentrated K2CO3 and monoethanolamine is called
A. Winkler process B. Claus processC. hot-lime-soda process D. Girbotol process
58. Which of the following methods of H2 manufacture yields high purity H2?
A. electrolytic B. thermal C. chemical D. mechanical
59. The theoretical voltage for electrolysis of water to produce H2 is 1.23 V, but experiment shows it requires 2-2.25 V to produce H2. This discrepancy is due to
A. wrong use of electrode B. overvoltage of H2
C. the catalyst used D. the electrolyte used 60. The first reaction in steam-hydrocarbon reforming process for H2 production is
A. reforming reaction B. water-gas-shift reactionC. absorption of H2 D. removal of CO2
61. The ff are the catalysts that are used for H2 manufacture, EXCEPT
A. Ni for methanation B. Ni for ammonia crackingC. iron oxide shift reaction D. ethanolamine for scrubbing
62. Which process ranks next to ateam-hydrocarbon process in the amount of H2 produced?
A. partial oxidation B. coal gasification C. cracked ammonia D. electrolytic
63. Oxygen and nitrogen are produced principally byA. refrigeration of air B. liquefaction and rectification of airC. freezing of air D. electrolysis of water64. High purity of oxygen is produced from air by
A. electrolysis B. cryogenics C. distillation D. dry freezing65. Carbon dioxide and light hydrocarbons accumulated in liquid oxygen is removed by
A. distilling B. passing through a silica gel trapC. electrolysis D. freezing
Use the choices below for items 66-70.A. accumulation in the oxygen sump of the upper columnB. collecting it at the dome of the main condenserC. double column and side rectification columnsD. cracking or pyrolysis
66. Process of acetylene production67. Production of argon68. Process for neon production69. Process for krypton and xenon production70. Helium is typically obtained from
A. natural gas B. water C. air D. minerals71. The following are the processes of acetylene production EXCEPT
A. partial oxidation B. thermal crackingC. electric arc D. rectification
72. Acetylene production using an arc furnace to pyrolyze hydrocarbons is called_____process. A. Winkler B. Claus C. Wulff D. Girbotol 73. The liquid portion of the paint is called
A. solvent B. vehicle C. enamel D. thinnerUse the ff. choices below for items 74-77
A. paint B. varnish C. enamel D. lacquer 74. Clear coating 75. Opaque solid-based coating76. Pigmented varnish 77. Film forming by evaporation78. The following are the volatile components of vehicle EXCEPT
A. acetates B. ketones C. oils D. aromatics79. Synthetic drying oils that are made from fatty acids or oils, polybasic acids and polyhydric resins are called
A. vehicle B. solvents C. alkyds D. plasticizer 80. What is the chief function of oils in paint?
A. solvent B. additive C. plasticizer D. color81. In paints, oil films are formed by “drying”. Drying is a chemical change involving A. pyrolysis B. oxidation and polymerization C. cracking & oxidation D. hydrogenation & oxidationUse the choices below for items 82-86
A. driers B. oil bodying C. dehydration D. isomerisation or conjugationE. fractionation and segregation
82. Improvement of drying oils such as linseed and soybean oils83. Improvement of drying oil by oxidation by heating in kettles84. Improvement of drying oils using catalyst85. Applicable to castor oil modification it is achieved by heating the oil in the presence of alumina or silica gel
86. Separate drying constituents from non-drying constituents of oil by solvent extraction87. Film formation takes place largely through coalescence of dispersed resin particles in A. latex paint B. varnishes C. emulsions D. lacquers 88. In latex paint the ff. film formers are used EXCEPT A. acrylics B. PVA C. PVA-acrylic copolymer D. linseed oil 89. Paint with Pigment volume concentration of 25-35% is classified as
A. flat paint B. gloss paint C. metal primers D. wood primers
90. Pigment volume concentration (PVC) largely controls the ff. EXCEPT
A. drying property B. reflectance C. gloss D. rheological properties
Use the ff. choices for items 91-95A.Flaking B. Chalking C. Checking D. Alligatoring E. Erosion91. Poor attachment of the paint to the surface92. Very fine type surface craking93. Center section starts to peel remains attached to the surface94. Very rapid chalking95. Progressive powdering of the paint96. Colored, organic and inorganic insoluble substances used widely in surface coating are called
A. latex B. pigment C. enamel D. lacquer Determine the color of the ff. pigments. Use the ff. choices below for items 97-107
A.white B. Black C. Blue D. Red E. Yellow F. Green G. Brown
97. Zinc chromate 98. Carbon 99. Fe2O3 100. Vandyke 101. Cr2O3 102. Na-Al-silcates and sulphides 103. Pb3O4 104. TiO2 105. Lithophone 106. Fe4[Fe(CN)6]3 107. Quinacridones 108. Insoluble organic dyes that may be used directly as pigments are called
A. paints B. toners C. lacquers D. lakes109. Solutions of resins in volatile solvents are called
A. toners B. spirits C. japans D. lakes110. Coating composition based on synthetic film-forming materials dissolved in volatile solvents is called
A. paints B. toners C. lacquers D. lakes111. Which of the chemicals is used for marine antifouling coasting?
A. tributyl tin oxide B. Fe C. Al D. resinsUse the ff. choices for items 112-122A.refining B. milling C. canning D. concentration E. freezing F. drying G. pasteurization H. sterilization I. fermentation J.irradiation J. packaging 112. The process of converting grain into flour by mechanical means is called 113. The process of using cardboard boxes or plastic containers so that food can be shipped and/or stored
114. The process which kills or completely inactivate all microorganisms in food by heat treatment.115. The use of gamma rays to preserve food without causing undesirable denaturation.116. The process of decomposition of carbohydrates by microorganism is117. The preservation of food at low temperature is called118. The process of killing pathogenic microorganisms in food like milk is called119. The process of converting sugar into common food products is called120. Process of removing water to increase the amount juice or food or milk products is called121. Process of reducing the volume of solid food and also a method of preservation using the heat of the sun.122. Process of preserving meat and food products using metal containers is called123. To ensure heat penetration in short-time high temperature canning, the A. food must be agitated B. can must be made of tin C. heat must from coal D. food must be conductive124. The ff. are used for concentrating food EXCEPT
A. evaporation B. freezing C. osmosis D. irradiation125. Before drying of fruits, it is treated with what chemical to prevent its bright color becomes brown?
A. NaNO3 B. SO3 C. SO2 D. NaNO2 126. A sterilization process where milk is heated while moving through a plastic sleeve by hot water is called
A. Alfa-laval’s B. No-Bac’s C. HTST D. LTST127. The action of microorganisms on protein is called
A. fermentation B. putrefaction C. sterilization D. denaturation
128. Irradiation as mean of preservation can be applied toA. potatoes B. meat C. fruit D. all of the above
129. Which of the ff. can increase the shelf-life of milk longer and can also be used for other perishable food?A. HTST B. sterilization C. aseptic packaging D. canning130. Freezing as method of preservation can be done EXCEPT A. quick freezing and maintaining at low temperature B. immersion in liquid nitrogen C. blanching prior to freezing D. slow freezing Use the ff. choices for items 20-22.
A.chrome tanning B. vegetable tanning C. synthetic tanning
131. Leather production using salt and sulphuric acid as pickling bath 132. Leather production using condensation product of condensation of sulfonated phenols and formaldehyde133. Leather production using bark extracts.Use the ff. choices for items 134-136A.blasting gelatine B. Japanese gelatine C. Animal gelatine
134. Gelatin obtained from hydrolysis from collagen and connective tissues of animal body135. Gelatin formed by mixing collodion cotton and nitroglycerine136. Gelatin comes from mucilaginous substance from seaweed137. The ff. acids are used for Type A gelatin production EXCEPT
A. HCl B. NH4Cl C. H2SO4 D. H3PO4
138. Gelatin B is made fromA. seaweed B. agar agar C. bones D. cotton
Synthetic resin adhesives: Use the ff. choices for 139-30 A.rubbery thermosets B. thermoplastics C. copolymers139. They are used as sealant to exclude weather and gases140. High temperature-resistant adhesive141. Hot melt, nonsolvent glues 142. A common vehicle for perfume is A. methanol B. ethanol/water C. essential oils D. water143. A constituent of perfume with lower volatility than perfume oil which retards and even up the evaporation of other constituents is called
A. vehicle B. flavour C.fixative D. solventClassify the ff. fixatives: Use the ff. choices for items 144-151
A. animal B. resinous C. essential oil D. synthetic 144. Muskone 145. Myrrh 146. Civetone 147. Clary sage 148. Benzophenone 149. Amyl benzoate 150. Balsams 151. Orris
INDUSTRIAL CHEMISTRYMIDTERM EXAMNAME: _______________________DATE: _________DIRECTION: ENCIRCLE THE LETTER THAT CORRESPONDS TO YOUR ANSWER.1. In industrial chemistry, chemical reactions applied to industrial processing is called chemical ____.
A. kinetics B. conversions C. manufacture D. innovation
2. Chemical engineering emerged as a separate discipline from chemistry and mechanical engineering in
A. 1910 B. 1900 C. 1920 D. 19113. Physical operations necessary for manufacturing chemicals are called
A. physical units B. unit conversions
C. unit operations D. unit processes4. The following are example of chemical conversions EXCEPT
A. sulfonation B. heat transferC. reduction D. ion exchange
5. Chemical conversions are similar in terms of the following EXCEPT
A. energy change B. reaction timeB. equilibrium D. profit
6. An easily managed chemical-conversion segregation is by A. large-scale plant B. multiple use of equipment C. specialized plant D. specialized equipmentUse the ff. choices to answer item 7-10.
A.Softening B. ClarificationC. Purification D. Ion exchange
7. A process which reduces the hardness of water is8. The removal of organic matter and microorganism in water is called9. A process of reducing the turbidity of water is called10. A process of removal of salts using ionic polymer resins is called11. When sodium-cation-exchanger is exhausted, it is temporarily taken out of service and backwashed, and regenerated by ______solution.
A. HCl B. CaCl2 C. NaCl D. MgCl2
12. Which of the following exchangers can remove all kinds of cations?
A. Na-polymer B. H-polymer C. zeolite D. chalk13. Which of the following is an economical method of regenerating hydrogen-cation exchanger?
A. HCl B. H2SO4 C. HNO3 D. NH3
14. In water conditioning, acidic water is commonly neutralized by
A. NaOH B. Na-zeolite C. CaCO3 D. chalk15. Demineralization of softened water is performed by using
A. cation-exchanger B. zeolite C. anion-exchanger D. HCl
16. Which of the following can be used to deminiralize silicic acid-containing water?
A. weakly basic anion exchangerB. highly basic anion exchangerC. Na-cation exchangerD. H-cation exchanger
17. In water conditioning, weakly basic exchanger can be regenerated by the ff. EXCEPTA. caustic soda B. soda ash C. NH4OH D. zeolite18. Lime-soda process uses what reagents
A. Ca(OH)2 B. Na2O C. MaCl2 D. CaCO3
19. How many moles of lime is needed to reduce the hardness of water due to MgSO4?
A. 1 B. 3 C. 2 D. 420. Water with 100ppm hardness due to Ca(HCO3)2 requires how many kg of lime?
A. 124.7 kg B. 62.4 kg C. 103.1 kg D. 25 kg21. Which of the ff. water conditioning methods that uses cheaper lime and partially soften hard water?A. ion exchange B. deareation C. desalting D. cold-lime22. What is the first step in hot-lime-soda process? A. heating of raw water B. analysis of raw water C. pumping of lime slurry D. reaction of lime and soda23. Which of the following water conditioning is the most appropriate for boiler feedwater?
A. hot-lime-soda B. cold-lime C. ion exchange D. Na-zeolite
24. Which of the following can be used to pick up iron in circulating water in cooling systems and also is used to minimize corrosion?
A. trisodium phosphate B. Na hexametaphosphateC. zeolite D. lime
25. Which of the following is NOT used as protective salt to remove dissolved oxygen in boiler water?
A. chromates B. alkalies C. phosphates D. soda26. Dissolved oxygen in boiler water can be removed by the ff. methods EXCEPT
A. electrode polarization B. cold-lime C. organic inhibitors D. protective salts
27. Traces of oxygen in boiler water can be removed byA. hydrazine hydrate B. Fe C. CaCO3 D. phosphates
28. Which of the ff. can be used to remove silica in boiler water?
A. Na-zeolite B. hot-lime sodaC. H-cation exchanger D. activated magnesia
29. For highly saline water, which of the ff. is preferred method for desalination?
A. distillation B. multi-stage flash evaporationB. vapour compression D. reversed osmosis
30. To kill pathogens in the water, which of the ff. can be used?
A. activated carbon B. chloramines C. resins D. CaCl2
31. According to the theory of pyrolysis, the bonds that break first below 200 C are A. C-H linkages B. aliphatic C-C bonds
C. heterocycles D. aromatic bonds 32. The principal product of high and low temperature carbonization is
A. coal B. coke C. CO2 D. ethylene 33. Which of the following is NOT considered as by-products of carbonization or destructive distillation of coal?
A. hydrogen B. ammonia C. CH4 D. coke34. The first step in coking of coal is
A. crushing and screening of coalB. charging the coal to the hot ovenC. pyrolysis of coalD. H2S removal
35. In coking of coal, ammonia is removed asA. liquid B. gas C. salt D. semisolid
36. Coal tar is a mixture of compounds mostlyA. aliphatic B. aromatic C. gases D. inrganics
Use the ff. choices for items 37-39A.batch still B. continuous still C. continuous unit
37. A method of distillation of coal tar which uses a single distillation column 38. A method of distillation of coal tar with multiple columns with reboilers 39. An obsolete method of distillation of coal tarUse the following choices for items 40-43A.light oils B. middle oils C. heavy oils D. anthracene oils40. Contains naphathalene, phenol, and cresol41. Fractions from 250-300 deg C. 42. A fraction when washed with solvent to remove phenanthrene and carbazole , a solid remains43. Contains benzene, toluene, and homologs44. _____is the most widely used dehydrating agent for natural gas.A. alumina B. glycol C. silica gel D. sulphuric acid45. H2S and other sulphur compounds are undesirable in natural gas because it causes A. pollution B. corrosion C. foul odor D. all the above 46. Sulphur compounds in natural gas are converted to sulphur by A. Claus process B. cold-lime process C. Winkler process47. The oldest and the widely used solvent for H2S and CO2 removal in natural gas isA. monoethanolamine B. methanol C. diglycolamine D. propylene carbonate48. Which of the ff. is NOT a coal tar product?
A. benzene B. toluene C. ammonia D. naphthalene 49. A fuel gas that is made by passing air and stream through a bed of hot coal or coke is called
A. coke-oven gas B. water gas
C. blue gas D. producer gas 50. A fuel gas that produced by the reaction steam on incandescent coal or coke at 1000 deg C is called
A. blue gas B. syngas C. producer gas D. SNG Use the ff. choices for items 51-53
A.Lurgi process B. Winkler process C. Koppers-Tolzek process
51. Gasification system for syngas that uses fixed bed52. Gasification system for syngas that uses entrained flow53. Gasification system for syngas that uses fluidized bed54. Syngas can be converted to high-heat content gas called
A. SNG B. coke-oven gas C. LPG D. producer gas 55. In oil gasification, naphtha is mixed with steam in a ratio of ______and gasify the mixture, and subsequently is methanated.
A. 1: 1 B. 1: 2 C. 2: 1 D. 3: 1 56. The ff. are the most important commercial production of CO2 gas EXCEPT
A. recovery from syngas in ammonia productionB. recovery as by-product in SNG productionC. recovery from CaCO3
D. recovery from natural wells57. An adsorption process for concentrating CO2 that uses hot, concentrated K2CO3 and monoethanolamine is called
A. Winkler process B. Claus processC. hot-lime-soda process D. Girbotol process
58. Which of the following methods of H2 manufacture yields high purity H2?
A. electrolytic B. thermal C. chemical D. mechanical
59. The theoretical voltage for electrolysis of water to produce H2 is 1.23 V, but experiment shows it requires 2-2.25 V to produce H2. This discrepancy is due to
A. wrong use of electrode B. overvoltage of H2
C. the catalyst used D. the electrolyte used 60. The first reaction in steam-hydrocarbon reforming process for H2 production is
A. reforming reaction B. water-gas-shift reactionC. absorption of H2 D. removal of CO2
61. The ff are the catalysts that are used for H2 manufacture, EXCEPT
A. Ni for methanation B. Ni for ammonia crackingC. iron oxide shift reaction D. ethanolamine for scrubbing
62. Which process ranks next to ateam-hydrocarbon process in the amount of H2 produced?
A. partial oxidation B. coal gasification C. cracked ammonia D. electrolytic
63. Oxygen and nitrogen are produced principally byA. refrigeration of air B. liquefaction and rectification of airC. freezing of air D. electrolysis of water64. High purity of oxygen is produced from air by
A. electrolysis B. cryogenics C. distillation D. dry freezing65. Carbon dioxide and light hydrocarbons accumulated in liquid oxygen is removed by
A. distilling B. passing through a silica gel trapC. electrolysis D. freezing
Use the choices below for items 66-70.A. accumulation in the oxygen sump of the upper columnB. collecting it at the dome of the main condenserC. double column and side rectification columnsD. cracking or pyrolysis
66. Process of acetylene production67. Production of argon68. Process for neon production69. Process for krypton and xenon production70. Helium is typically obtained from
A. natural gas B. water C. air D. minerals71. The following are the processes of acetylene production EXCEPT
A. partial oxidation B. thermal crackingC. electric arc D. rectification
72. Acetylene production using an arc furnace to pyrolyze hydrocarbons is called_____process. A. Winkler B. Claus C. Wulff D. Girbotol 73. The liquid portion of the paint is called
A. solvent B. vehicle C. enamel D. thinnerUse the ff. choices below for items 74-77
A. paint B. varnish C. enamel D. lacquer 74. Clear coating 75. Opaque solid-based coating76. Pigmented varnish 77. Film forming by evaporation78. The following are the volatile components of vehicle EXCEPT
A. acetates B. ketones C. oils D. aromatics79. Synthetic drying oils that are made from fatty acids or oils, polybasic acids and polyhydric resins are called
A. vehicle B. solvents C. alkyds D. plasticizer 80. What is the chief function of oils in paint?
A. solvent B. additive C. plasticizer D. color81. In paints, oil films are formed by “drying”. Drying is a chemical change involving A. pyrolysis B. oxidation and polymerization C. cracking & oxidation D. hydrogenation & oxidationUse the choices below for items 82-86
A. driers B. oil bodying C. dehydration D. isomerisation or conjugationE. fractionation and segregation
82. Improvement of drying oils such as linseed and soybean oils83. Improvement of drying oil by oxidation by heating in kettles84. Improvement of drying oils using catalyst85. Applicable to castor oil modification it is achieved by heating the oil in the presence of alumina or silica gel
86. Separate drying constituents from non-drying constituents of oil by solvent extraction87. Film formation takes place largely through coalescence of dispersed resin particles in A. latex paint B. varnishes C. emulsions D. lacquers 88. In latex paint the ff. film formers are used EXCEPT A. acrylics B. PVA C. PVA-acrylic copolymer D. linseed oil 89. Paint with Pigment volume concentration of 25-35% is classified as
A. flat paint B. gloss paint C. metal primers D. wood primers
90. Pigment volume concentration (PVC) largely controls the ff. EXCEPT
A. drying property B. reflectance C. gloss D. rheological properties
Use the ff. choices for items 91-95A.Flaking B. Chalking C. Checking D. Alligatoring E. Erosion91. Poor attachment of the paint to the surface92. Very fine type surface craking93. Center section starts to peel remains attached to the surface94. Very rapid chalking95. Progressive powdering of the paint96. Colored, organic and inorganic insoluble substances used widely in surface coating are called
A. latex B. pigment C. enamel D. lacquer Determine the color of the ff. pigments. Use the ff. choices below for items 97-107
A.white B. Black C. Blue D. Red E. Yellow F. Green G. Brown
97. Zinc chromate 98. Carbon 99. Fe2O3 100. Vandyke 101. Cr2O3 102. Na-Al-silcates and sulphides 103. Pb3O4 104. TiO2 105. Lithophone 106. Fe4[Fe(CN)6]3 107. Quinacridones 108. Insoluble organic dyes that may be used directly as pigments are called
A. paints B. toners C. lacquers D. lakes109. Solutions of resins in volatile solvents are called
A. toners B. spirits C. japans D. lakes110. Coating composition based on synthetic film-forming materials dissolved in volatile solvents is called
A. paints B. toners C. lacquers D. lakes111. Which of the chemicals is used for marine antifouling coasting?
A. tributyl tin oxide B. Fe C. Al D. resinsUse the ff. choices for items 112-122A.refining B. milling C. canning D. concentration E. freezing F. drying G. pasteurization H. sterilization I. fermentation J.irradiation J. packaging 112. The process of converting grain into flour by mechanical means is called 113. The process of using cardboard boxes or plastic containers so that food can be shipped and/or stored
114. The process which kills or completely inactivate all microorganisms in food by heat treatment.115. The use of gamma rays to preserve food without causing undesirable denaturation.116. The process of decomposition of carbohydrates by microorganism is117. The preservation of food at low temperature is called118. The process of killing pathogenic microorganisms in food like milk is called119. The process of converting sugar into common food products is called120. Process of removing water to increase the amount juice or food or milk products is called121. Process of reducing the volume of solid food and also a method of preservation using the heat of the sun.122. Process of preserving meat and food products using metal containers is called123. To ensure heat penetration in short-time high temperature canning, the A. food must be agitated B. can must be made of tin C. heat must from coal D. food must be conductive124. The ff. are used for concentrating food EXCEPT
A. evaporation B. freezing C. osmosis D. irradiation125. Before drying of fruits, it is treated with what chemical to prevent its bright color becomes brown?
A. NaNO3 B. SO3 C. SO2 D. NaNO2 126. A sterilization process where milk is heated while moving through a plastic sleeve by hot water is called
A. Alfa-laval’s B. No-Bac’s C. HTST D. LTST127. The action of microorganisms on protein is called
A. fermentation B. putrefaction C. sterilization D. denaturation
128. Irradiation as mean of preservation can be applied toA. potatoes B. meat C. fruit D. all of the above
129. Which of the ff. can increase the shelf-life of milk longer and can also be used for other perishable food?A. HTST B. sterilization C. aseptic packaging D. canning130. Freezing as method of preservation can be done EXCEPT A. quick freezing and maintaining at low temperature B. immersion in liquid nitrogen C. blanching prior to freezing D. slow freezing Use the ff. choices for items 20-22.
A.chrome tanning B. vegetable tanning C. synthetic tanning
131. Leather production using salt and sulphuric acid as pickling bath 132. Leather production using condensation product of condensation of sulfonated phenols and formaldehyde133. Leather production using bark extracts.Use the ff. choices for items 134-136A.blasting gelatine B. Japanese gelatine C. Animal gelatine
134. Gelatin obtained from hydrolysis from collagen and connective tissues of animal body135. Gelatin formed by mixing collodion cotton and nitroglycerine136. Gelatin comes from mucilaginous substance from seaweed137. The ff. acids are used for Type A gelatin production EXCEPT
A. HCl B. NH4Cl C. H2SO4 D. H3PO4
138. Gelatin B is made fromA. seaweed B. agar agar C. bones D. cotton
Synthetic resin adhesives: Use the ff. choices for 139-30 A.rubbery thermosets B. thermoplastics C. copolymers139. They are used as sealant to exclude weather and gases140. High temperature-resistant adhesive141. Hot melt, nonsolvent glues 142. A common vehicle for perfume is A. methanol B. ethanol/water C. essential oils D. water143. A constituent of perfume with lower volatility than perfume oil which retards and even up the evaporation of other constituents is called
A. vehicle B. flavour C.fixative D. solventClassify the ff. fixatives: Use the ff. choices for items 144-151
A. animal B. resinous C. essential oil D. synthetic 144. Muskone 145. Myrrh 146. Civetone 147. Clary sage 148. Benzophenone 149. Amyl benzoate 150. Balsams 151. Orris
INDUSTRIAL CHEMISTRYFINAL EXAMNAME: _______________________DATE: _________DIRECTION: ENCIRCLE THE LETTER THAT CORRESPONDS TO YOUR ANSWER.1. In industrial chemistry, chemical reactions applied to industrial processing is called chemical ____.
A. kinetics B. conversions C. manufacture D. innovation
2. Chemical engineering emerged as a separate discipline from chemistry and mechanical engineering in
A. 1910 B. 1900 C. 1920 D. 19113. Physical operations necessary for manufacturing chemicals are called
A. physical units B. unit conversions
C. unit operations D. unit processes4. The following are example of chemical conversions EXCEPT
A. sulfonation B. heat transferC. reduction D. ion exchange
5. Chemical conversions are similar in terms of the following EXCEPT
A. energy change B. reaction timeB. equilibrium D. profit
6. An easily managed chemical-conversion segregation is by A. large-scale plant B. multiple use of equipment C. specialized plant D. specialized equipmentUse the ff. choices to answer item 7-10.
A.Softening B. ClarificationC. Purification D. Ion exchange
7. A process which reduces the hardness of water is8. The removal of organic matter and microorganism in water is called9. A process of reducing the turbidity of water is called10. A process of removal of salts using ionic polymer resins is called11. When sodium-cation-exchanger is exhausted, it is temporarily taken out of service and backwashed, and regenerated by ______solution.
A. HCl B. CaCl2 C. NaCl D. MgCl2
12. Which of the following exchangers can remove all kinds of cations?
A. Na-polymer B. H-polymer C. zeolite D. chalk13. Which of the following is an economical method of regenerating hydrogen-cation exchanger?
A. HCl B. H2SO4 C. HNO3 D. NH3
14. In water conditioning, acidic water is commonly neutralized by
A. NaOH B. Na-zeolite C. CaCO3 D. chalk15. Demineralization of softened water is performed by using
A. cation-exchanger B. zeolite C. anion-exchanger D. HCl
16. Which of the following can be used to deminiralize silicic acid-containing water?
A. weakly basic anion exchangerB. highly basic anion exchangerC. Na-cation exchangerD. H-cation exchanger
17. In water conditioning, weakly basic exchanger can be regenerated by the ff. EXCEPTA. caustic soda B. soda ash C. NH4OH D. zeolite18. Lime-soda process uses what reagents
A. Ca(OH)2 B. Na2O C. MaCl2 D. CaCO3
19. How many moles of lime is needed to reduce the hardness of water due to MgSO4?
A. 1 B. 3 C. 2 D. 420. Water with 100ppm hardness due to Ca(HCO3)2 requires how many kg of lime?
A. 124.7 kg B. 62.4 kg C. 103.1 kg D. 25 kg21. Which of the ff. water conditioning methods that uses cheaper lime and partially soften hard water?A. ion exchange B. deareation C. desalting D. cold-lime22. What is the first step in hot-lime-soda process? A. heating of raw water B. analysis of raw water C. pumping of lime slurry D. reaction of lime and soda23. Which of the following water conditioning is the most appropriate for boiler feedwater?
A. hot-lime-soda B. cold-lime C. ion exchange D. Na-zeolite
24. Which of the following can be used to pick up iron in circulating water in cooling systems and also is used to minimize corrosion?
A. trisodium phosphate B. Na hexametaphosphateC. zeolite D. lime
25. Which of the following is NOT used as protective salt to remove dissolved oxygen in boiler water?
A. chromates B. alkalies C. phosphates D. soda26. Dissolved oxygen in boiler water can be removed by the ff. methods EXCEPT
A. electrode polarization B. cold-lime C. organic inhibitors D. protective salts
27. Traces of oxygen in boiler water can be removed byA. hydrazine hydrate B. Fe C. CaCO3 D. phosphates
28. Which of the ff. can be used to remove silica in boiler water?
A. Na-zeolite B. hot-lime sodaC. H-cation exchanger D. activated magnesia
29. For highly saline water, which of the ff. is preferred method for desalination?
A. distillation B. multi-stage flash evaporationB. vapour compression D. reversed osmosis
30. To kill pathogens in the water, which of the ff. can be used?
A. activated carbon B. chloramines C. resins D. CaCl2
31. According to the theory of pyrolysis, the bonds that break first below 200 C are A. C-H linkages B. aliphatic C-C bonds
C. heterocycles D. aromatic bonds 32. The principal product of high and low temperature carbonization is
A. coal B. coke C. CO2 D. ethylene 33. Which of the following is NOT considered as by-products of carbonization or destructive distillation of coal?
A. hydrogen B. ammonia C. CH4 D. coke34. The first step in coking of coal is
A. crushing and screening of coalB. charging the coal to the hot ovenC. pyrolysis of coalD. H2S removal
35. In coking of coal, ammonia is removed asA. liquid B. gas C. salt D. semisolid
36. Coal tar is a mixture of compounds mostlyA. aliphatic B. aromatic C. gases D. inrganics
Use the ff. choices for items 37-39A.batch still B. continuous still C. continuous unit
37. A method of distillation of coal tar which uses a single distillation column 38. A method of distillation of coal tar with multiple columns with reboilers 39. An obsolete method of distillation of coal tarUse the following choices for items 40-43A.light oils B. middle oils C. heavy oils D. anthracene oils40. Contains naphathalene, phenol, and cresol41. Fractions from 250-300 deg C. 42. A fraction when washed with solvent to remove phenanthrene and carbazole , a solid remains43. Contains benzene, toluene, and homologs44. _____is the most widely used dehydrating agent for natural gas.A. alumina B. glycol C. silica gel D. sulphuric acid45. H2S and other sulphur compounds are undesirable in natural gas because it causes A. pollution B. corrosion C. foul odor D. all the above 46. Sulphur compounds in natural gas are converted to sulphur by A. Claus process B. cold-lime process C. Winkler process47. The oldest and the widely used solvent for H2S and CO2 removal in natural gas isA. monoethanolamine B. methanol C. diglycolamine D. propylene carbonate48. Which of the ff. is NOT a coal tar product?
A. benzene B. toluene C. ammonia D. naphthalene 49. A fuel gas that is made by passing air and stream through a bed of hot coal or coke is called
A. coke-oven gas B. water gas
C. blue gas D. producer gas 50. A fuel gas that produced by the reaction steam on incandescent coal or coke at 1000 deg C is called
A. blue gas B. syngas C. producer gas D. SNG Use the ff. choices for items 51-53
A.Lurgi process B. Winkler process C. Koppers-Tolzek process
51. Gasification system for syngas that uses fixed bed52. Gasification system for syngas that uses entrained flow53. Gasification system for syngas that uses fluidized bed54. Syngas can be converted to high-heat content gas called
A. SNG B. coke-oven gas C. LPG D. producer gas 55. In oil gasification, naphtha is mixed with steam in a ratio of ______and gasify the mixture, and subsequently is methanated.
A. 1: 1 B. 1: 2 C. 2: 1 D. 3: 1 56. The ff. are the most important commercial production of CO2 gas EXCEPT
A. recovery from syngas in ammonia productionB. recovery as by-product in SNG productionC. recovery from CaCO3
D. recovery from natural wells57. An adsorption process for concentrating CO2 that uses hot, concentrated K2CO3 and monoethanolamine is called
A. Winkler process B. Claus processC. hot-lime-soda process D. Girbotol process
58. Which of the following methods of H2 manufacture yields high purity H2?
A. electrolytic B. thermal C. chemical D. mechanical
59. The theoretical voltage for electrolysis of water to produce H2 is 1.23 V, but experiment shows it requires 2-2.25 V to produce H2. This discrepancy is due to
A. wrong use of electrode B. overvoltage of H2
C. the catalyst used D. the electrolyte used 60. The first reaction in steam-hydrocarbon reforming process for H2 production is
A. reforming reaction B. water-gas-shift reactionC. absorption of H2 D. removal of CO2
61. The ff are the catalysts that are used for H2 manufacture, EXCEPT
A. Ni for methanation B. Ni for ammonia crackingC. iron oxide shift reaction D. ethanolamine for scrubbing
62. Which process ranks next to ateam-hydrocarbon process in the amount of H2 produced?
A. partial oxidation B. coal gasification C. cracked ammonia D. electrolytic
63. Oxygen and nitrogen are produced principally byA. refrigeration of air B. liquefaction and rectification of airC. freezing of air D. electrolysis of water64. High purity of oxygen is produced from air by
A. electrolysis B. cryogenics C. distillation D. dry freezing65. Carbon dioxide and light hydrocarbons accumulated in liquid oxygen is removed by
A. distilling B. passing through a silica gel trapC. electrolysis D. freezing
Use the choices below for items 66-70.A. accumulation in the oxygen sump of the upper columnB. collecting it at the dome of the main condenserC. double column and side rectification columnsD. cracking or pyrolysis
66. Process of acetylene production67. Production of argon68. Process for neon production69. Process for krypton and xenon production70. Helium is typically obtained from
A. natural gas B. water C. air D. minerals71. The following are the processes of acetylene production EXCEPT
A. partial oxidation B. thermal crackingC. electric arc D. rectification
72. Acetylene production using an arc furnace to pyrolyze hydrocarbons is called_____process. A. Winkler B. Claus C. Wulff D. Girbotol 73. The liquid portion of the paint is called
A. solvent B. vehicle C. enamel D. thinnerUse the ff. choices below for items 74-77
A. paint B. varnish C. enamel D. lacquer 74. Clear coating 75. Opaque solid-based coating76. Pigmented varnish 77. Film forming by evaporation78. The following are the volatile components of vehicle EXCEPT
A. acetates B. ketones C. oils D. aromatics79. Synthetic drying oils that are made from fatty acids or oils, polybasic acids and polyhydric resins are called
A. vehicle B. solvents C. alkyds D. plasticizer 80. What is the chief function of oils in paint?
A. solvent B. additive C. plasticizer D. color81. In paints, oil films are formed by “drying”. Drying is a chemical change involving A. pyrolysis B. oxidation and polymerization C. cracking & oxidation D. hydrogenation & oxidationUse the choices below for items 82-86
A. driers B. oil bodying C. dehydration D. isomerisation or conjugationE. fractionation and segregation
82. Improvement of drying oils such as linseed and soybean oils83. Improvement of drying oil by oxidation by heating in kettles84. Improvement of drying oils using catalyst85. Applicable to castor oil modification it is achieved by heating the oil in the presence of alumina or silica gel
86. Separate drying constituents from non-drying constituents of oil by solvent extraction87. Film formation takes place largely through coalescence of dispersed resin particles in A. latex paint B. varnishes C. emulsions D. lacquers 88. In latex paint the ff. film formers are used EXCEPT A. acrylics B. PVA C. PVA-acrylic copolymer D. linseed oil 89. Paint with Pigment volume concentration of 25-35% is classified as
A. flat paint B. gloss paint C. metal primers D. wood primers
90. Pigment volume concentration (PVC) largely controls the ff. EXCEPT
A. drying property B. reflectance C. gloss D. rheological properties
Use the ff. choices for items 91-95A.Flaking B. Chalking C. Checking D. Alligatoring E. Erosion91. Poor attachment of the paint to the surface92. Very fine type surface craking93. Center section starts to peel remains attached to the surface94. Very rapid chalking95. Progressive powdering of the paint96. Colored, organic and inorganic insoluble substances used widely in surface coating are called
A. latex B. pigment C. enamel D. lacquer Determine the color of the ff. pigments. Use the ff. choices below for items 97-107
A.white B. Black C. Blue D. Red E. Yellow F. Green G. Brown
97. Zinc chromate 98. Carbon 99. Fe2O3 100. Vandyke 101. Cr2O3 102. Na-Al-silcates and sulphides 103. Pb3O4 104. TiO2 105. Lithophone 106. Fe4[Fe(CN)6]3 107. Quinacridones 108. Insoluble organic dyes that may be used directly as pigments are called
A. paints B. toners C. lacquers D. lakes109. Solutions of resins in volatile solvents are called
A. toners B. spirits C. japans D. lakes110. Coating composition based on synthetic film-forming materials dissolved in volatile solvents is called
A. paints B. toners C. lacquers D. lakes111. Which of the chemicals is used for marine antifouling coasting?
A. tributyl tin oxide B. Fe C. Al D. resinsUse the ff. choices for items 112-122A.refining B. milling C. canning D. concentration E. freezing F. drying G. pasteurization H. sterilization I. fermentation J.irradiation J. packaging 112. The process of converting grain into flour by mechanical means is called 113. The process of using cardboard boxes or plastic containers so that food can be shipped and/or stored
114. The process which kills or completely inactivate all microorganisms in food by heat treatment.115. The use of gamma rays to preserve food without causing undesirable denaturation.116. The process of decomposition of carbohydrates by microorganism is117. The preservation of food at low temperature is called118. The process of killing pathogenic microorganisms in food like milk is called119. The process of converting sugar into common food products is called120. Process of removing water to increase the amount juice or food or milk products is called121. Process of reducing the volume of solid food and also a method of preservation using the heat of the sun.122. Process of preserving meat and food products using metal containers is called123. To ensure heat penetration in short-time high temperature canning, the A. food must be agitated B. can must be made of tin C. heat must from coal D. food must be conductive124. The ff. are used for concentrating food EXCEPT
A. evaporation B. freezing C. osmosis D. irradiation125. Before drying of fruits, it is treated with what chemical to prevent its bright color becomes brown?
A. NaNO3 B. SO3 C. SO2 D. NaNO2 126. A sterilization process where milk is heated while moving through a plastic sleeve by hot water is called
A. Alfa-laval’s B. No-Bac’s C. HTST D. LTST127. The action of microorganisms on protein is called
A. fermentation B. putrefaction C. sterilization D. denaturation
128. Irradiation as mean of preservation can be applied toA. potatoes B. meat C. fruit D. all of the above
129. Which of the ff. can increase the shelf-life of milk longer and can also be used for other perishable food?A. HTST B. sterilization C. aseptic packaging D. canning130. Freezing as method of preservation can be done EXCEPT A. quick freezing and maintaining at low temperature B. immersion in liquid nitrogen C. blanching prior to freezing D. slow freezing Use the ff. choices for items 20-22.
A.chrome tanning B. vegetable tanning C. synthetic tanning
131. Leather production using salt and sulphuric acid as pickling bath 132. Leather production using condensation product of condensation of sulfonated phenols and formaldehyde133. Leather production using bark extracts.Use the ff. choices for items 134-136A.blasting gelatine B. Japanese gelatine C. Animal gelatine
134. Gelatin obtained from hydrolysis from collagen and connective tissues of animal body135. Gelatin formed by mixing collodion cotton and nitroglycerine136. Gelatin comes from mucilaginous substance from seaweed137. The ff. acids are used for Type A gelatin production EXCEPT
A. HCl B. NH4Cl C. H2SO4 D. H3PO4
138. Gelatin B is made fromA. seaweed B. agar agar C. bones D. cotton
Synthetic resin adhesives: Use the ff. choices for 139-30 A.rubbery thermosets B. thermoplastics C. copolymers139. They are used as sealant to exclude weather and gases140. High temperature-resistant adhesive141. Hot melt, nonsolvent glues 142. A common vehicle for perfume is A. methanol B. ethanol/water C. essential oils D. water143. A constituent of perfume with lower volatility than perfume oil which retards and even up the evaporation of other constituents is called
A. vehicle B. flavour C.fixative D. solventClassify the ff. fixatives: Use the ff. choices for items 144-151
A. animal B. resinous C. essential oil D. synthetic 144. Muskone 145. Myrrh 146. Civetone 147. Clary sage 148. Benzophenone 149. Amyl benzoate 150. Balsams 151. Orris 152.Which of the ff. can be used as buffer and neutralizing agent?
A. sodium citrate B. benzoic acid C. polysorbate D. saccharin
153. Shortenings contain the ff esters EXCEPTA. palmitic B. oleic C. linoleic D. benzoic acids
154. The present production of monosodium glutamate is largely from
A. fermentation B. extraction C. harvesting from the sea D. synthesis
155. What is the purpose of heating the cocoa bean in rotary roaster between 105-120 deg C?
A. to cook the beans B. to extract the oilsC. to remove unpleasant tannins and odorD. to convert it to chocolate
156. Fine vanilla can be extracted from Mexican and Bourbon beans using what solvent?
A. ethanol B. hexane C. methanol D. water
157- 161. Arrange the ff. unit operations for the extraction of oil from cottonseed.A.cooking of cottonseed meatB. cleaning of cottonseeds by screening and aspirationC.cutting and freeing the meat from the delinted seedsD. Extraction of oil by mechanical screw pressesE. Direct solvent extraction and prepressing of oil with solvent extraction162. The first step in the production of corn oil is cleaning the corn, then, it is placed in a tank and is steeped with warm water with SO2 toA separate the oil B. purify the oil C. loosen the hulls from kernels D. remove the germ163. Which of the ff. oils can be produced using hydraulic press or the Anderson expeller?
A. palm B. peanut C. corn D. coconut 164-174. Arrange the ff. unit operations for the production of monosodium glutamate by fermentation.A.Fermentation of sugar, ammonia and other solidsB. Drying of MSGC. Addition and dissolving of NaOH to glutamic acidD. Hydrolysis of crude product of fermentation by HClE. decolorization of MSGF. concentration of crude product of fermentationH. centrifugation to remove by products of fermentation e.g. cellsI crystallization of glutamic acidJ. filtration of glutamic acid from mother liquorK neutarlization of excess HClL. MSG crystallization175. In the alkali refining method, the free fatty acids are neutralized with A. HCl B. 50% NaOH C. 0.1% NaOH D. 10% NaOH176. Oils are degummed by coagulation with small amount of 0.05%
A. HCl B. H3PO4 C. H3PO3 D. H2SO4
177. Which of the ff. can be used to bleach edible oils? A. chlorine B. Na2O2 C. chlorine dioxide D. bentonite 178. The objective of hydrogenation of fats and oils is to
A. hardened the oil B. lower the m. p. C. improve the taste and odor D. preserve the oil
179. Deodorization of oil is done by A. bed adsorbent tower B. chemical reaction C. using activated carbon D. superheated steam under vacuum 180. The oil produced by cooking of animal skin, bones, and feet of cattle in water for 10 hrs is called
A. lard B. Neat’s foot oil C. tallow D. butter oil181. The occurrence of a much graeter than random proportion od disaturated triglyceride molecules containing stearic, palmitic, and unsaturated fatty acid is called
A. degree of unsaturation B. fatty acid content
C. graininess D. greasiness182. The ff. can reduce the graininess in lard EXCEPT
A. directed interesterification B. randomization C. hydrogenation D. drying and heating the lard in the presence of alkaline catalyst
183. Extraction of lube oil followed by distillation yields microcrystalline ____wax.
A. montan B. paraffin C. ozocerite D. synthetic184. Which of the ff. detergents is more effective in removing soil at lower temperature?
A. cationic B. anionic C. non-ionic D. soap 185. Maintaining the dirt in a stable solution or suspension is calledA. suspending B. detergency C. dissolution D. salvation186. Amido imidazolinium compound is what type of cationic detergent
A. A B. B. C. C. D. it is not cationic 187. Biodegradable detergents are made from primarily from phenyl-substituted n-alkanes with
A. 11 to 14 C atoms B. 17 to 18 C atomsC. 20 to 22 C atoms D. 15 to 18 C atoms
188. An important procedure for manufacturing C12 to C18 alpha-olefins and fatty even-numbered straight-chain alcohols for detergents is A. Ziegler B. Cannizzaro C. Friedel-Crafts D. pyrolysis190. For soap, foam inhibition increases withA. the amount of unsaturation B. the amount of saturation
C. acidity D. additives 191-200. Arrange the ff. unit operations for the manufacturing of sugar.A.Extraction of juice from cane using millsB.Hopping and shreading of caneC.Recovery of sugar from the settled-out muds using vacuum filtersD.Evaporation of filtrate to thicken the yellow juice E. Screening of juice to remove impurities and treating it with lime F.The thick juice goes to three single-effect vacuum pan for evaporation to a pre determined supersaturationG.Washing of cane for to remove mad and debris H. Massecuite is centrifuged to remove the syrup. The crystal is high grade raw sugar.I. Shipping of raw sugar to refineryJ. Heating the mixture at high pressure in clarifiers 201- 207.Arrange the ff. unit operations for the refining of sugar.A. The crystals are dumped into melterB. The resulting syrup is removed by centrifugation and the sugar cake is sprayed with waterC. Removal of the CaCO3D. The clarified liquor is sent to decolorizationE. Raw sugar is treated with heavy syrup (60-80 Brix)
F. The melted and washed sugar undergoes clarification and defecationG. Addition of CO2 to the melted sugar to precipitate CaCO3208. In sugar refining, which of the ff. is an example of mechanical clarification? A. frothing B. carbonation C. addition of diatomaceous earth D. decarboxylation 209. The first step in refining, wherein the raw sugar crystals are treated with heavy syrup is called
A. clarification B. decolorization C. affination D. decolorization
230. Dark-colored liquor can be converted to soft brown sugars by the ff. EXCEPT
A. bone char B. ion-exchange resin C. Synthad D. diatomaceous earth
231-236. Arrange the ff. unit operations for manufacture of starch dextrin and dextrose from cornA.Separation of germ from germ-fiber starchB.The remaining corn kernel conatins starch, gluten, and cellulosic fiber are milled and sieved and separatedC.Purified starch are purified dried D.Cooking of starch to covert it to dextrins and gumsE.Cleaning of corn and softening the kernelF. Degermination of softened kernels237-241 Use the choices below:A. gloss starch B. dialdehyde starch C. thin-boiling starch D. gelatinized starch E. Starch ester237. Treatment of hypochlorite 238. Starch with higher %moisture239.Mild-acidic conversion 240. Reaction with ethylene or propylene 241. Precooking of starch242. The ff. are basic prerequisite of a good fermentation process EXCEPT
A. microorganism forms the desired end productB. economical raw materials for substrate C. Slow fermentation D. Acceptable yields
243. The extraction of the valuable constituents of malt, malt adjuncts, and sugars by macerating is called
A. grinding B. mashing C. pounding D. crushing244. Beer manufacturing consists of the ff. EXCEPT
A. malting B. storage, finishing and packaging C. fermentation D. brewing
245-246 Arrange the ff. unit operations for the production of wineA.Wine undergoes clarificationB. Addition of extra tanninsC.The pulp is put into tank and treated with sulphurous acidD. Correction of wines to commercial standards E. Addition of yeast for fermentation
F. Wine is run into closed tanks for 2-3 weeksG.Wine undergoes cellar treatment and remained quiet for 6 weeksH. Macerating of red or black grapes247. – 251 Use the ff. choicesA. beer B. wine C. brandy D. bourdon whiskey E. Scotch wiskey 247. Uses barley dried with peat248. distilling and aging of beer that contains at least 51% corn249. beverage with 2-7% alcohol250. fermentation of grapes251. distilled from wine or from marc252-259. Arrange the ff. unit operations for Kraft pulpingA.Washing and rethickening of the pulpB. Pulp washingC. Screening and thickening of washed pulpD. Cutting of logs into chipsE. Screening of chipsF. Bleaching of pulpG. Laps are made on a wet thickenerH. Chips enters the continuous digester260- 265Pulping: Use the choices belowA.Kraft pulping B. Sulfite pulping C. Mechanical pulping D. NSSC pulping E. Rag pulping F. Dissolving Pulp260. Made by posttreatment of high-quality sulphite pulp with NaOH261. Stone-ground wood involves no chemical treatment262. Involves sulfonation and solubilising of lignin and hydrolytic splitting of cellulose-lignin complex263. Uses substantially less chemicals in pulping than full chemical process264. Uses the oldest material for making paper and the material still used for finest grades265. Sulfate pulping266-274 PlasticsA. Thermoplastic B. Thermosetting C. Polymer resin266. Phenolic resin 267. Vinyls 268. Styrenes 269 Amino resin270. ethyl cellulose 271. Polyethylene 272. Polysulfone273. Polyimides 274. Epoxy resin275-19 Polymerization ProcessesA. Bulk B. Solution C. Suspension D. Emulsion275. The monomer is suspended in water by agitation and stabilaizers276. The monomer is broken up into droplets to form aggregates called micelles.277. Polymerization in liquid or vapour state 278. The monomer and initiator are dissolved in a nonreactive solvent 279-286 Types of Portland cement: Use the choices belowA.Type 1 B. Type 2 C. Type 3 D. Type 4 E. Type 5.
279. Cement made from raw materials with lime-to-silisca ratio higher than that of Type 1280. Low-heat Portland cement281. Sulfate resisting Portland cement282. Regular Portland cement283. Cement used when moderate heat of hydration is required284. With lowest C3S285. With highest C3S286. With highest C2S287. Which of the ff. has the highest heat of hydration?
A. C4AF B. C2S C. C3A D. C3S288. Which of the ff. compounds causes set but needs retardation?
A. C4AF B. C2S C. C3A D. C3S289. Which of the ff. compounds responsible for early strength?
A. C4AF B. C2S C. C3A D. C3S290. The ff. are calcareous components of cement EXCEPT
A. limestone B. Shale C. Oyster shell D. marl291. Setting and hardening of cement is caused by
A. decarboxylation B. CO2 absorption C. hydration D. aeration
