Organic Chemistry

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Q. What is the main product when propanal is treated with excess Grignard reagent followed by hydrolysis?
  • A. Propan-1-ol
  • B. Propan-2-ol
  • C. Propan-1,2-diol
  • D. Butan-2-ol
Q. What is the main product when propanal is treated with excess hydrogen in the presence of a catalyst?
  • A. Propan-1-ol
  • B. Propan-2-ol
  • C. Propanoic acid
  • D. Propane
Q. What is the main product when propanoic acid is treated with thionyl chloride?
  • A. Propyl chloride
  • B. Propanoic anhydride
  • C. Propionyl chloride
  • D. Propylene
Q. What is the main product when propene is reacted with hydrogen in the presence of a catalyst?
  • A. Propane
  • B. Butane
  • C. Ethane
  • D. Cyclopropane
Q. What is the main product when propene undergoes hydroboration-oxidation?
  • A. Propan-1-ol
  • B. Propan-2-ol
  • C. Propanoic acid
  • D. Butanol
Q. What is the main product when toluene is nitrated?
  • A. Nitrotoluene
  • B. Dinitrotoluene
  • C. Benzaldehyde
  • D. Benzyl alcohol
Q. What is the main purpose of emulsifiers in food products?
  • A. Thicken
  • B. Stabilize mixtures
  • C. Add flavor
  • D. Preserve freshness
Q. What is the main purpose of using antioxidants in food?
  • A. Enhance color
  • B. Prevent oxidation
  • C. Improve taste
  • D. Increase shelf life
Q. What is the main purpose of using baking soda in cooking?
  • A. Flavoring
  • B. Leavening
  • C. Preserving
  • D. Coloring
Q. What is the main purpose of using fluoride in dental care?
  • A. Whiten teeth
  • B. Prevent cavities
  • C. Freshen breath
  • D. Strengthen gums
Q. What is the main reaction type when alcohols are converted to alkyl halides?
  • A. Substitution
  • B. Elimination
  • C. Addition
  • D. Redox
Q. What is the main reason for the existence of geometric isomers?
  • A. Presence of double bonds
  • B. Presence of single bonds
  • C. Presence of chiral centers
  • D. Presence of functional groups
Q. What is the main reason for the stability of aromatic compounds?
  • A. High molecular weight
  • B. Presence of double bonds
  • C. Resonance energy
  • D. Hydrogen bonding
Q. What is the main reason for the stability of benzene?
  • A. Presence of double bonds
  • B. Resonance
  • C. Hydrogen bonding
  • D. Ionic interactions
Q. What is the main source of alkanes?
  • A. Coal
  • B. Natural gas
  • C. Petroleum
  • D. Biomass
Q. What is the main storage form of carbohydrates in animals?
  • A. Starch
  • B. Glycogen
  • C. Cellulose
  • D. Chitin
Q. What is the main structural component of plant cell walls?
  • A. Starch
  • B. Glycogen
  • C. Cellulose
  • D. Chitin
Q. What is the main type of isomerism exhibited by butene (C4H8)?
  • A. Structural isomerism
  • B. Geometric isomerism
  • C. Optical isomerism
  • D. Functional isomerism
Q. What is the main type of reaction that alkanes undergo?
  • A. Addition
  • B. Substitution
  • C. Elimination
  • D. Condensation
Q. What is the main use of polycarbonate?
  • A. Insulation
  • B. Optical lenses
  • C. Textiles
  • D. Adhesives
Q. What is the main use of polyvinyl chloride (PVC)?
  • A. Insulation
  • B. Pipes and fittings
  • C. Textiles
  • D. Adhesives
Q. What is the major product of the hydration of propene?
  • A. Propan-1-ol
  • B. Propan-2-ol
  • C. Butanol
  • D. Ethylene glycol
Q. What is the major product of the reaction between 1-bromo-2-methylpropane and sodium ethoxide?
  • A. 1-ethoxy-2-methylpropane
  • B. 2-ethoxy-2-methylpropane
  • C. 1-bromo-2-ethoxypropane
  • D. 2-bromo-2-methylpropane
Q. What is the major product of the reaction between 1-bromobutane and sodium ethoxide in ethanol?
  • A. 1-ethoxybutane
  • B. 2-ethoxybutane
  • C. butane
  • D. no reaction
Q. What is the major product of the reaction between 1-bromobutane and sodium hydroxide in ethanol?
  • A. 1-butanol
  • B. 2-butanol
  • C. butyl bromide
  • D. butyl ether
Q. What is the major product of the reaction between chlorobenzene and sodium hydroxide at high temperature?
  • A. Phenol
  • B. Benzene
  • C. Chlorobenzene
  • D. Sodium phenoxide
Q. What is the major product of the reaction of 1-bromobutane with sodium ethoxide in ethanol?
  • A. 1-butene
  • B. 2-butene
  • C. butane
  • D. no reaction
Q. What is the major product of the reaction of 1-bromobutane with sodium ethoxide?
  • A. Butane
  • B. Ethyl butyl ether
  • C. 1-butene
  • D. 2-butene
Q. What is the major product of the reaction of 1-butene with HBr?
  • A. 1-bromobutane
  • B. 2-bromobutane
  • C. Butane
  • D. Bromobenzene
Q. What is the major product of the reaction of 2-butyne with H2 in the presence of a catalyst?
  • A. 1-butyne
  • B. butane
  • C. 2-butyne
  • D. 3-butyne
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