ORGANIC CHEMISTRY QUIZ 4

What will be formed when 2-methylpent-2-ene react with hot and concentrated KMnO4?

• Propanoic acid

  • +

  • Propanone

• Propanoic acid

  • +

  • ethanone

• Propanone

  • +

  • Propanal

• Both propanone

How to differentiate between methylbenzene and ethylbenzene?

• Use concentrated HNO3 and H2SO4 in different temperature

• Use hot and conc. KMnO4 followed by limewater

• Add excess conc. HNO3 and conc. H2SO4

• Free radical substitution by Cl2 in the presence of UV

What will be formed if toulene + excess Br2 in the presence FeBr3 at 90'c

• 2,4,6-tribromootoluene

• 2-bromotoluene

• tribromomethylbenzene

• 2-bromotoluene

  and

  4-bromotoluene

2-phenylbut-1-ene + HCl -------------> ?

• None from above

• 1-chloro-2-phenylbutane

• 1,2-dichloro-2-phenylbutane

• 2-chloro-2-phenylbutane

How to produce Grignard reagent ?

• 
  Haloalkane + magnesium

  (dry ether at -10'c)

• Haloalkane + lithium

  (dry ether at -10'c)

• Haloalkane + lithium

  (dry ether + warm)

• Haloalkane + magnesium

  (dry ether + warm)

What will be formed when CH3CH2CHBr2 react with KOH (aq) ?

• Propanal

• Propanone

• Propanoic acid

• propan-1,1-diol

What type of reaction when CH3Cl reacts with ethanolic KCN?

• Elimination

• Electrophilic substitution

• Electrophilic aromatic substitution

• Nucleophilic substituiton

Which compound will tend to undergo Sn1 mechanism of hydrolysis

• CH3Cl

• (CH3)2CHCl

• (CH3)3CCl

• (CH3)4C

What reaction is when CH2=CH2 --------> CH3CH2OH

• Electrophilic substitution

• Electrophilic addition

• Nucleophilic addition

• Nucleophilic substitution

What is true for -Cl group that attached to benzene

• Activating group
  +
  ortho-para directing

• Deactivating group
  +
  ortho-para directing

• Activating group
  +
  meta directing

• Dectivating group
  +
  meta directing