ORGANIC CHEMISTRY QUIZ 7 (2025)

Which of the following reactions can produce propanoic acid?

• K2Cr2O7/ H+ (heat)

  +

  propanone

• KMnO4 /H+ (heat)

  +

  propan-2-ol

• KMnO4 /H+ (heat)

  • +
    Propanal

• KMnO4 /H+ (heat)

  • +
    but-1-ene

How to differentiate between ethanal and ethanol ?

• Use I2 in NaOH

• Use KMnO4 /H+ and heat

• Use tollens' reagent

• Use Fehling's solution

What is the product formed when butanol react with SOCl2 , heat under reflux?

• butanoyl chloride

• 1-chlorobutane

• butanoic acid

• No reaction

Which of the following reagent can be used to differentiate propanone from propanal ?

• KMnO4 + H+ （heat)

• 2,4-dinitrophenylhydrazine

• I2 in NaOH (aq)

• Tollens' reagent

CH3CH2OH + X --------------> CH3CHO

• Cu , 400'c

• Lithium tetrahydridoaluminate (LiAlH4) in dry ether

• KMnO4, H+

• NaCN in OH-, 10'c -20'c

What will be formed when CH3CH2CHBr2 react with ethanolic KOH ?

• CH3CHCH2

• CH3CH2CHO

• CH3COCH3

• CH3CH2COOH

4-methylphenol react with CH3Cl with catalyst AlCl3 will produce

• 1,4-dimethylphenol

• 2,3-dimethylphenol

• 2,4-dimethylphenol

• 3,4-dimethylphenol

Which of the following pair will produce ethyl methanoate

• Methanol + Ethanoic acid

• methanol + ethanoyl chloride

• Ethanol + methanoyl chloride

• methanoic acid + ethanoyl chloride

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

• 2-hydroxybutanenitrile

• 2-hydroxy-2-methylbutanenitrile

• 2-hydroxypentaneitrile

• No reaction

Which following pairs can produce 3-phenylhexan-3-ol ?

• C2H5MgCl

  +

  1-phenylbutan-2-one

• C3H7Li

  +

  1-phenylpropan-2-one

• C6H5Li +

  hexan-3-one

• C3H7MgCl

  +

  1-phenylpropan-1-one