11th cpi review questions2

7/30/2019 11th CPI Review Questions2

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Chemical Process Industries (CPI) Questions

Water Conditioning and Environmental Protection

1. In water conditioning, softening refers to the removal of hardness of water whereas _______refers to the removal of organic matter and microorganisms from water.

a. clarification b. eutrophication c. flotation d. purification

2. _______ is the amount of molecular oxygen required by a microbial population to stabilizebiodegradable organic material.

a. ThOD b. BOD c. COD d. TOC

Energy, Fuels, Air Conditioning, and Refrigeration

3. These large stationary installations generate steam at pressures above 1000 kPa.

a. falling-film evaporator c. kettlesb. fire-tube boilers d. water-tube boilers

4. _______ is a device substantially without moving parts, in which a fuel, such as hydrogen,natural gas, methanol, or propane, can be converted directly into twice the quantity of electrical energy

that would result from the usual boiler-turbine-generator combination.

a. fuel cells c. calandria type evaporatorb. chemical reactor d. furnace

Coal Chemicals

5. The process employed in the production of coke wherein the temperature ranges from 450 to

700C and the quantity of gaseous products is small compared to the liquid products formed.

a. high-temperature carbonization c. low-temperature carbonization

b. high-temperature combustion d. low-temperature combustion

6. The products other than coke during its production are collectively known as

a. intermediate products b. free radicals c. catalysts d. coal chemicals

Fuel Gases

7. Wha t is the other name for blue gas?

a. coke oven gas b. producer gas c. synthesis gas d. water gas

8. _______ is made by passing air and steam thru a bed o hot coal or coke.

a. coke oven gas b. producer gas c. synthesis gas d. water gas

Industrial Gases

9. Which of the following processes produces high-purity hydrogen and consists of passing direct

current through an aqueous solution of alkali, and decomposing the water according to the reaction

2H2O(l) 2H2(g) + O2(g)?

a. electrolytic method c. pure hydrogen productionb. steam-hydrocarbon reforming process d. partial oxidation process

10. All but one are the processes used for hydrogen production.

a. pyrolysis b. steam reforming c. coal gasification d. electrolysis

Industrial Carbon

11. The following are examples of amorphous carbon except

a. carbon black b. graphite c. activated carbon d. l ampblack

12. In this process, natural gas is cracked to carbon black and hydrogen at 1100 to 1650 C in a

refractory-lined furnace in a two-cycle (heating and making or decomposition) operation.

a. thermal black process c. gas furnace processb. oil furnace process d. crystallization

Ceramic Industries

13. The most important kilns that are used for the firing of brick, tile, porcelain, tableware, andrefractories.

a. periodic kilns c. continuous car tunnel kilns

b. updraft kilns d. downdraft kilns

14. China, earthenware, pottery, porcelain, stoneware, and vitreous ware are called _______.

a. exchange products b. refractories c. clay products d. whitewares

Portland Cements, Calcium, and Compounds Magnesium

15. It has been defined as the product obtained by pulverizing clinker consisting essentially ofhydraulic calcium silicates, usually containing one or more forms of calcium sulfate as an interground

addition.

a. clay b. portland cement c. shale d. gypsum

16. These agents increase the resistance of the hardened concrete to scaling from alternate freezing

and thawing and the use of de-icer s (such as CaCl2).

a. purifier b. crystallizer c. air entrainment agents d. clay

Glass Industries

17. The following characterize glass except

a. a completely vitrified productb. a rigid, undercooled liquid having no definite melting point and a sufficiently high

viscosity to prevent crystallizationc. a partially vitrified product

d. def ined as the union of the nonvolati le inorganic oxides

18. I t i s a lso called fused s il ica.

a. alkali silicates b. soda-lime glass c. borosilicate glass d. vitreous silica


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Salt and Miscellaneous Sodium Compounds

19. Glaubers salt has a chemical formula of

a. Na2SO410H2O b. CaSO410H2O c. NaNO310H2O d. Na3PO410H2O20. It is employed for the diazotization of amines in making azo dyes.

a. sodium chloride b. sodium nitrite c. sodium s ili cate d . sodium sul fi te

Chlor-alkali Industries: Soda Ash, Caustic Soda, Chlorine

21. _______ is a brittle white solid that readily absorbs moisture and carbon dioxide from the air.

a. salt b. talc c. pure caustic soda d. tainted caustic soda

22. Sodium bicarbonate is also referred to as

a. caustic soda b. soda ash c. sodium sesquicarbonate d. baking soda

Electrolytic Industries

23. What is the electrolytic process used to make iron?

a. electrothermal reduction b. electrolytic refining c. reduction in arc furnace c. hydration

24. What is the electrolytic process used to make gold and lead?

a. electrothermal reduction b. electrolytic refining c. reduction in arc furnace d. hydration

Electrothermal Industries

25. The raw materials for the production of silicon carbide are

a. silicon and carbon c. sand and carbon

b. silicon and graphite d. sand and graphite

26. Impure bauxite is often called

a. green bauxite b. red bauxite c. ye llow bauxite d. brown bauxite

Phosphorus Industries

27. Domestic _______ rocks are essentially fluorapatite admixed with various proportions of other

compounds of calcium, fluorine, iron, aluminum, and silicon.

a. phosphate b. carbate c. silicate d. igneous

28. The acidulation of phosphate rock to produce _______ has been the most important method of

making phosphate available for fertilizer purposes.

a. ultraphosphate b. superphosphate c. phosphor ic acid d. phospha te s

Potassium Industries

29. A strongly acidic material, and is used as a flux for ceramics, readily prepared from K2SO4 byreaction with sulfuric acid.

a . potassium hydroxide b . sulfur ic acid c. potass ium sul fate d. potassium bisulfate

30. What is the chemical name for the term caustic potash?

a. potassium hydroxide b. sulfuric acid c. potassium sulfate d. potassium bisulfate

Nitrogen Industries

31. It is readily made by reacting ammonia with phosphoric acid, centrifuging, and drying in a rotarydryer. It is used in quick-dissolving fertilizers and a s a fire-retarding agent for wood, paper, and cloth.

a. ammonium sulfate c. monoammonium phosphates

b. ammonium nitrate d. diammonium phosphates

32. It is a very important nitrogenous fertilizer because of its high nitrogen content (33%), thesimplicity and cheapness of its manufacture, and its valuable combination of quick-acting nitrate and

slower-acting ammoniacal nitrogen.

a. ammonium sulfate c. monoammonium phosphatesb. ammonium nitrate d. diammonium phosphates

Sulfur and Sulfuric Acid

33. _______ is used for sulfonation, especially in the manufacture of detergents. It is manufactured

by distillation of strong oleums.

a. liquid sulfur trioxde c. sulfuric acidb. liquid sulfur dioxide d. pure sulfur

34. It is a black, but still relatively strong, and not too heavily contaminated (about 90% H2SO4, 5%water, and 5% hydrocarbons).

a. spent sludge acids c. spent acidation catalystb. spent alkylation acid catalyst d. nitration spent acid

Hydrochloric Acid and Miscelaneous Inorganic Chemicals

35. _______ applications include commercial bleaching dye oxidation, the manufacture of organicand peroxide chemicals, and power generation.

a. sodium chromate b. hydrogen oxide c. hydrogen peroxide d. sodium dichromate

36. The starting material for the manufacture of _______ and other chromium compounds ischromite, a chromium iron oxide containing approximately 50% Cr2O3, the balance being principally

FeO, Al2O3, SiO2, and MgO.

a. sodium chroma te b. hydrogen oxide c. hydrogen peroxide d. sodium dichromate


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Nuclear Industries

37. _______ may be used as tracers, for studying structural chemistry, in biological, chemical, and

physical research, and for geological studies.

a. isotopes b. tritium c. deuterium d. borax

38. They are designed to produce enormous amounts of energy in a very brief time by driving

fissionable materials into a compact mass by explosive force, irradiated with many neutrons, and heldtogether as long as possible, thus producing large blast e ffects.

a. breeders b. atom bombs c. explosives d. converters

Explosives, Propellants, and Toxic Chemical Agents

39. It is a material that, under the influence of thermal or mechanical shock, decomposes rapidly andspontaneously with the evolution of a great deal of heat and much gas.

a. detonators b. atom bombs c. explosives d. blasters

40. In making explosives, nitroglycerin is used. It is produced using the following materials except.

a. nitric acid b. sulfuric acid c. glycerin d. soap

Photographic Product Industries

41. It is the process of producing a visible image upon a substance by the action of light or otherradiant energy.

a. photography b. pictography c. lithography d. colorization

42. _______ is a method which depends on the ability of ferric ions to be reduced to ferrous ions in

the presence of organic matter under the influence of strong light.

a. magnetic attraction b. blueprint process c. photocopying d. reprinting

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1. Aspirin is the chief derivative of salicylic acid that is used as a drug. This is also known as __.

a. sodium salicylate b. sodium phenolate c. methyl acety ester d. trimethylxanthine

2. What is the very important process employed in the manufacture of Riboflavin, also known as VitaminB2, which is a necessary element of all living cells?

a. condensation and cyclization c. carboxylation

b. alkylation d. dehydration

3. What process is commonly used in the production of ethers?

a. esterification b. halogenation c. hydration d. dehydration

4. Making a beer from a grain mixture containing at least 51% corn and distilling and aging it yields____.

a. brandy b. whisky c. rum d. vodka

5. Which of the following synthetic resins is not formed by addition polymerization?

a. polyethylene b.polystyrene c. polyglycol d. acrylic polymers

6. He is a famed physical chemist, who advanced the hypothesis that energy, not mass, is thefundamental basis of matter.

a . Albert Eins tein b . Louie de Broglie c. Wilhelm Ostwald d. J.J. Thompson

7. ____ is considered to the first high explosive to be employed on a large scale.

a. dynamite b. ammonium nitrate c. nitroglycerine d. TNT

8. Fixed nitrogen from the air is the major ingredient of fertilizers, which makes intensive foodproduction possible. In many ways, the most convenient form for fixed nitrogen is____.

a. ammonium sulfate b. synthetic ammonia c. urea d. nitric acid

9. It is the most abundant metal in the world.

a. iron b. magnesium c. gold d. aluminum

10. It is the breaking down of large hydrocarbon molecules into smaller molecules by heat or catalyticaction in petroleum processing.

a . polymerization b. aromat ization c. pyrolysis d. hydrogenation

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Surface Coating Industries

43. Liquid paint is a dispersion of a finely divided pigment in a liquid composed of a resin or binder and avolatile solvent. Its liquid portion is known as ____.

a. vehicle b. pigment c. solute d. toner

44. ____ is an unpigmented colloidal dispersion or solution of synthetic and/ or natural resins in oils and/or thinners used as protective and/ or decorative coating for various surfaces and which dries by

evaporation, oxidation and polymerization of portions of its constituents.

a. toner b. pigment c. lacquer d. inks

Food and Food By-Product Process

45. Food concentration is a method of food preservation, wherein foodstuffs that naturally contain a highpercentage of wa ter are partially dehydrated. All but one of the following are processes available for

food concentration:

a . reverse osmosis b . evaporation c. condensation d. freeze concentration

46. The usual practice of food concentration is to reduce volume of the food to ____ its original volume.

a. three-fourths b. one-half c. one-fourth d. one-third

Agrichemical Industries


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47. Insecticides are agents for destroying insects and are generally classified by their mode of action. Ifcontact insecticides kill following simple bodily contact and stomach poisons are lethal to insects thatingest them, ____ act on the insects respiratory system.

a. fumigants b. attractants c. repellants d. systemics

48. Three major elements needed for plant growth are nitrogen, phosphorus and potassium. Which of the

following is essential for the development of starches, sugars and fibers?

a. nitrogen b. phosphorus c. potassium d. all of the above

Fragrances, Flavors and food Additives

49. _____ are substances of lower volatility than the perfume oils, which retard and even up the rate of

evaporation of the various odorous constituents.

a. vehicles b. colognes c. toilet waters d. fixatives

50. It is an important flavoring agent, yet has no flavor of its own. It accentuates the hidden flavors of the

food in which it is used.

a. MSG b. salt c. sugar d. pepper

Oils, Fats and Waxes

51. In processing vegetable oils, which of the following converts various unsaturated radicals of fattyglycerides into more highly or completely saturated glycerides by addition of hydrogen in the presence

of a catalyst?

a. deodorization b. hardening c. refining d. bleaching

52. _____ is the name given to certain naturally occurring mineral waxes.

a. Montan b. Candelilla c. Ozcerite d. Paraffin

Soaps and Detergents

53. Which of the following detergent additives are fluorescent dyes, which make fabrics look brighterbecause of their ability to convert ultraviolet light to visible light?

a. bluings b. tarnish inhibitors c. bleaches d. fabric brighteners

54. The basic chemical reaction in the making of soap is:

a. saponification b. hydrolysis c. neutralization d. dehydration

55. ____ is a clear, nearly colorless liquid having a sweet taste but no odor. It may be produced bysaponification of glycerides to produce soap or by recovery from the hydrolysis or splitting of fats and

oils to produce fatty acids.

a. Stearic acid b. glycerin c. sodium stea rate d. caustic soda

Sugar and Starch Industry

56. The most recent major change in the sugar industry was the introduction of HFCS, which became

commercially available in 1970. It became competitive with cane and beet sugar as sweetener. Whatdoes HFCS stands for?

a. High-Fat Carbohydrate Source c. High-Fructose Corn-derived Sweetener

b. High-Fructose Carbohydrate Source d. High-Fat Corn-derived Sweetener

57. In sugar manufacturing, the ____ is the product after pan boiling of the syrup, which is dumped into

the crystallizer and then centrifuged to separate the sugar crystals.

a. molasses b. mixed juice c. clarified juice d. massecuite

58. ____ is the fibrous by-product in sugar manufacturing, which results from sugar cane milling.

a. bagasse b. paper c. wood d. grass

59. It is the unit used for measuring the specific gravity of particular liquid process materials or productsin sugar manufacturing.

a. baume b. brix c. pol d. apparent purity

60. It is a linear chain of dextrose units and resembles cellulose, which it can supplant for many uses, suchas in films, adhesives and papers.

a. protein b. wax c. amylose d. amylopectin

Fermentation Industries

61. Absolute alcohol is practically 100% ethyl alcohol, which is also called as ____.

a. pure alcohol b. isopropyl alcohol c. rubbing alcohol d. anhydrous alcohol

62. It is the primary acid constituent of sour milk, being formed by the fermentation of milk sugar byStreptococcus lactis.

a. lactic acid b. citric acid c. amino acid d. hydrochloric acid

63. Scotch whisky comes only from Scotland and uses ____ dried with peat, which gives its distinctiveflavor.

a. onion b. barley c. grapes d. wheat

Wood-derived Chemicals

64. _____ is the generic name for the oil obtained upon the acidification of the black liquor residue fromthe kraft digesters.

a. rosin b. crude oil c. tall oil d. baby oil

65. It is a fine, smokeless fuel, prized for its smokelessness and used extensively for outdoor cooking.

a. molasses b. mixed juice c. clarified juice d. massecuite

Pulp and Paper Industries

66. It is an alkaline method of pulping, which is applicable for almost any kind of wood. Fibers obtainedin this process are bleachable and strong.

a. Kraft pulping b. Sulfite pulping c. NSSC pulping d. mechanical pulping

67. ____ are rigid and semi-rigid sheets formed by the wet- or dry-felting of fibers. Low-density kinds are

generally used for insulation.


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a. paper b. fiberboard c. particle board d. black board

68. It is manufactured using sawdust, shavings and wood flakes or special shapes to combine good

physical properties with attractive appearance.

a. paper b. fiberboard c. particle board d. black board

Plastic Industries

69. It is a non-biodegradable organic material, which can be divided into thermosetting, thermoplastic, oilsoluble and protein products.

a. paper b. fiberboard c. wood pulp d. plastic

70. ____ are organic compounds added to plastics to improve workability during fabrication, to extend ormodify the natural properties of the plastics, and to develop new, improved properties not present in

the original resin.

a. plasticizer b. cellulose c. fillers d. paper pulp

71. Synthetic resins formed by condensation polymerization are ____, which when cured with heat

produces an infusible or insoluble product.

a. thermoplastic b. thermosetting c. cellulose derivatives d. protein products

Man-Made Fiber and Film Industries

72. All but one are the most important general properties of fibers:

a. length b. crimp c. thickness d. denier

73. Short fibers are also known as _____.

a. bagasse b. pith c. lignin d. staple

74. _____ is a copolymer of vinyl chloride and vinylidene chloride, which is prepared by mixing the two

monomers with a catalyst and heating.

a. saran b. plastic c. PVC d. PET

75. Which of the following forms of carbon fibers are prepared from rayon, polyacrylonitrile (PAN), or

pitch?

a. low modulus b. high modulus c. medium modulus d. small modulus

Rubber Industries

76. The name rubber was apparently given by ____, who first observed the ability of the material torub out a pencil mark.

a. Albe rt Einstein b. Isaac Newton c. Joseph Priestly d. Robert Brown

77. _____ protect the rubber goods from attack by oxygen and ozone in the atmosphere.

a. accelerators b. retarders c. peptizers d. age resistors

Petroleum Processing

78. Benzene can be made by the following processes, except one:

a. dehydrogenation of cyclohexane or substituted cyclohexanes

b. aromatization of methylcyclooentanec. dimethylation of toluene or xylenesd. hydrogenation of cyclohexane

79. The ____ number is a measure of the suitability of the fuel for high-compression engines. It is the

percentage of the iso-octane which, when added to n-heptane, knocks in a special test engine to thesame degree as the fuel is being tested.

a. octane b. heptane c. hexane d. pentane

Petrochemicals

80. _____ is isopropyl benzene and is made by reacting benzene with propylene over a catalyst such as a

phosphoric acid derivative at 250C and 700 kPa.

a. toluene b. cumene c. hexane d. ethyl benzene

Cyclic Intermediates and Dyes

81. _____ groups cause color by altering absorption bands in the visible spectrum.

a. chlorophyll b. monochrome c. chromophore d. auxochrome

82. These ice colors are made right on the fiber by coupling diazotized material while in contact with thefibers.

a. acid dyes b. direct dyes c. azoic dyes d. disperse dyes

Pharmaceutical Industry

11th cpi review questions2

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