Chemical Technology MCQ

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• What are the steps involved in the manufacture of butanol by oxo process?
  ক

  Aldehyde step-Alcohol step

  খ

  Aldehyde step-Acid step

  গ

  Acid step-Alcohol step

  ঘ

  Ketone step-Alcohol step
• Decobalting is not a process alternative in oxo process.
  ক

  True

  খ

  False
• Cobalt carbonyl is soluble in the hydrocarbons during the manufacture of oxo process.
  ক

  True

  খ

  False
• What is the final product of an oxo process?
  ক

  Alcohol

  খ

  Ketone

  গ

  Acid

  ঘ

  Aldehyde with one additional C atom
• What are the suitable thermodynamics in an oxo process?
  ক

  High temperature and pressure

  খ

  Low temperature and pressure

  গ

  High temperature low pressure

  ঘ

  Low temperature high pressure
• What is an oxo process?
  ক

  Substitution of H-CHO across a double bond

  খ

  Addition of H-CHO across a double bond

  গ

  Substitution of H-CHO across a triple bond

  ঘ

  Addition of H-CHO across a triple bond
• What kind of a catalyst is used in the packed bed reactor of isomerization section in the manufacture of isoprene from isomerization of polypropylene dimer?
  ক

  Neutral type catalyst

  খ

  Solid catalyst

  গ

  Acid type catalyst

  ঘ

  Gas type catalyst
• What are the series of chemical reactions in manufacture of isoprene from isomerization of polypropylene dimer?
  ক

  Dimerization-Isomerization-Pyrolysis

  খ

  Pyrolysis-Isomerization-Dimerization

  গ

  Dimerization-Pyrolysis-Isomerization

  ঘ

  Pyrolysis-Dimerization-Isomerization
• Isoprene can be polymerized with a stereospecific catalyst. True or false?
  ক

  True

  খ

  False
• Which catalyst is used in the manufacture of isoprene by isomerization of propylene dimer?
  ক

  Triethyl aluminium

  খ

  Trimethyl aluminium

  গ

  Triphenyl aluminium

  ঘ

  Tripropyl aluminium
• Which among the following methods is not used for the manufacture of isoprene?
  ক

  Isomerization of propylene dimer

  খ

  Isobutylene formaldehyde reaction

  গ

  Methyl ethyl ketone formaldehyde reaction

  ঘ

  Ethylene cyanohydrin pyrolysis
• What are the impurities present in the acrylonitrile column in the manufacture of acrylonitrile from propylene-ammonia-air oxidation process?
  ক

  Saturated alcohol

  খ

  Saturated carboxylic isocyanide

  গ

  Saturated carboxylic cyanohydrin

  ঘ

  Dust particles
• What are the by products produced in the manufacture of acrylonitrile from Propylene-ammonia-air oxidation process?
  ক

  Cumene and acetone

  খ

  Cumene and acetonitrile

  গ

  Acetonitrile and hydrogen cyanide

  ঘ

  Cumene and hydrogen cyanide
• Which catalyst is used in the manufacture of acrylonitrile from propylene-ammonia-air oxidation process?
  ক

  Molybdenum-bismuth

  খ

  Molybdenum

  গ

  Silver

  ঘ

  Iron
• Reaction kinetics is the major engineering problem in the manufacture of acrylonitrile.
  ক

  True

  খ

  False
• Which method is used for the manufacture of industrial acrylonitrile?
  ক

  Propylene-ammonia-air oxidation process

  খ

  Catalytic dehydrogenation of isopropanol

  গ

  Propylene alkylation of benzene

  ঘ

  Contact process
• Which among the following is the molecular formula of cumene?
  ক

  C9H12

  খ

  C3H8O

  গ

  CH3COOH

  ঘ

  CH3CH2COOH
• Tubular reactor design is better than stage wise design the manufacture of cumene via propylene alkylation of benzene.
  ক

  True

  খ

  False
• Which catalyst is used in the packed stage reactor column for the manufacture of cumene via propylene alkylation of benzene?
  ক

  Silver

  খ

  Copper

  গ

  Palladium

  ঘ

  H3PO4
• How can we minimize the formation of polyalkylbenzene in the manufacture of cumene?
  ক

  Using low benzene and propylene feed

  খ

  Using high benzene and propylene feed

  গ

  Using a high-end catalyst

  ঘ

  Using a low-end catalyst
• How is cumene manufactured?
  ক

  Propylene alkylation of benzene

  খ

  Catalytic hydrogenation of isopropanol

  গ

  Oxidation of butane

  ঘ

  Oxidation of propylene
• Which catalyst is used in Wacker’s process?
  ক

  Copper

  খ

  Arsenic

  গ

  Palladium (II) chloride

  ঘ

  Silver
• What is purity of acetone produced by the dehydrogenation of isopropanol?
  ক

  50%

  খ

  60%

  গ

  80%

  ঘ

  99%
• What is the ideal pressure for the manufacture of acetone by dehydrogenation of isopropanol?
  ক

  50-100atm

  খ

  900-1000atm

  গ

  250-350atm

  ঘ

  3-4atm
• Combined oxidation dehydrogenation is a better alternative to dehydrogenation of isopropanol for the manufacture of acetone.
  ক

  True

  খ

  False
• Which among the following methods is not used for the manufacture of acetone?
  ক

  Catalytic hydrogenation of isopropanol

  খ

  Oxidation of butane

  গ

  Oxidation of propylene

  ঘ

  Hydration of propylene
• What is the by product produced in the manufacture of isopropyl alcohol by indirect hydration of propylene?
  ক

  Isopropanol

  খ

  Isopropyl ether

  গ

  Acetic acid

  ঘ

  Fumaric acid
• Acetone can be prepared from isopropanol. True or false.
  ক

  True

  খ

  False
• How do we remove the presence of acidic impurities in the manufacture of isopropanol?
  ক

  Wash water

  খ

  Caustic wash

  গ

  Sulphuric acid

  ঘ

  Phosphoric acid
• Which compound is used to decrease the temperature in the absorber during the manufacture of isopropanol by hydration of propylene?
  ক

  Refrigerated brine

  খ

  Cold water

  গ

  Sulphuric acid

  ঘ

  Nitric acid