..:: Organic Chemistry

Question 1: Name this molecule:
A: 1,2-dimethylbutane B: 3,4-dimethylbutane C: hexane D: 3-methylpentane

Question 2: Classify this reaction: CH₂=CH₂ + H₂O ==> C₂H₅OH
A: Chlorination B: Oxidation C: Hydration D: Elimination

Question 3: An alcohol is reacted with Lucas Reagent. Cloudiness is observed after 2 minutes. The alcohol could be:
A: pentan-3-ol B: ethanol C: 3-methyl-hexan-2-ol D: 2-methylbutan-2-ol

Question 4: Alcohol X is reacted with acidified dichromate solution causing a colour change from orange to blue-green to form Y. Y is reacted with Benedict's solution; a colour change from blue to red is observed. X could be:
A: pentan-3-ol B: ethanol C: 3-methylhexan-2-ol D: 2-methylbutan-2-ol

Question 5: The first member of the ketone family is:
A: Methanone B: Ethanone C: Propanone D: Butanone

Question 6: Which of the following reactants will promote an elimination reaction with a haloalkane?
A: Aqueous ammonia B: Aqueous potassium hydroxide C: Alcoholic potassium hydroxide D: Water

Question 7: Esterification reactions between an alcohol and a carboxylic acid require what catalyst?
A: Concentrated sulfuric acid B: Dilute sulfuric acid C: Water D: None

Question 8: How do you differentiate between two optical isomers?
A: The rotate at different rates B: They have different colours C: They have different melting/boiling points D: They rotate the plane of polarised light in different directions

Question 9: What is the most common method of producing a chloroalkane?
A: PCl3 and an alcohol B: HCl and an alcohol C: HCl and an alcohol, under reflux D: Reaction of an alcohol with a carboxylic acid, followed by addition of HCl

Question 10: What is a product when an ester is hydrolysed under alkaline conditions?
A: A carboxylic acid B: A carboxylate salt C: Water D: Does not react

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