ORGANIC CHEMISTRY QUIZ 6

Which of the reagent can be used to distinguish pentan-1-ol and pentan-2-ol?

• PCl5

• ZnCl2 +

  conc. HCl

• Na2CO3

• KMnO4 + H+

Condition for converting benzene to phenylethanone are......

• Heat ethanol with benzene

• benzene with CH3CH2Cl

  with AlCl3 catalyst

• heat benzene with CH3COCl with AlCl3 catalyst

• Add tin in concentrated HCl

What will be formed when 3-methylpentan-1-ol heated with K2Cr2O7 with H+?

• Aldehyde

• Ketone

• Carboxylic acid

• Diol

What is the reagents for elimination reaction of CH3CH2Cl ?

• Ethanolic KCN

• Ethanolic KOH

• Concentrated H2SO4

• Alumina (Al2O3)

  and heat

Reaction of phenol in excess nitrating agents will produce?

• 2-nitrophenol

  and

  4-nitrophenol

• 2-nitrophenol

  and

  4-nitrophenol
  and
  6-nitrophenol

• 2,4,6-trinitrophenol

• 1,3,6-trinitrophenol

Which of the following reactions is esterification reaction?

• Ethanol +

  Ethanoyl chloride

  (room condition)

• Phenol + ethanoyl chloride (alkaline condition)

• Methanoic acid +

  Propanoyl chloride

  (Conc. H2SO4)

• Ethanol + Propanoic acid

  (heat under reflux)

What will be produced when butanone react with NaCN in alkaline solution (10-20'c)?

• 2-hydroxybutanenitrile

• 2-hydroxy-2-methylbutanenitrile

• 2-hydroxypentaneitrile

• 2-hydroxy-2-methylpentanenitrile

Which of the following can used to yield butanoic acid?

• carbon dioxide +

  propyl magnesium chloride

• hot and conc KMnO4 + H+

  +

  pent-2-ene

• butan-2-ol
  +
  H+ + KMnO4 (Heat)

• potassium hydroxide (ethanolic)

  +

  1,1,1-tribromobutane

Which of the following reagents CANNOT be used to differentiate between ethanal and ethanone ?

• K2Cr2O7 + H+
  (Heat)

• 2,4-dinitrophenylhydrazine

• ammonia solution +

  silver nitrate solution

• Alkaline iodine solution

Which following pairs CANNOT produce 3-phenylhexan-3-ol

• C2H5MgCl

  +

  1-phenylbutan-1-one

• C3H7Li

  +

  1-phenylpropan-2-one

• C6H5Li +

  hexan-3-one

• C3H7MgCl

  +

  1-phenylpropan-1-one