Addition reactions Knowledge-Based Download PDF

Questions

1. 1.

   What is the major organic product formed when 1-methylcyclohexene undergoes hydroboration with borane followed by oxidation with alkaline hydrogen peroxide?

   • A) 1-methylcyclohexanol
   • B) cis-2-methylcyclohexanol
   • C) trans-2-methylcyclohexanol
   • D) 2-methylcyclohexanone
2. 2.

   What is the major organic product formed when pent-2-yne undergoes catalytic hydrogenation in the presence of Lindlar's catalyst?

   • A) pentane
   • B) (E)-pent-2-ene
   • C) (Z)-pent-2-ene
   • D) pent-1-ene
3. 3.

   What is the major organic product formed when but-1-ene undergoes acid-catalyzed hydration in the presence of dilute sulfuric acid?

   • A) Butan-1-ol
   • B) Butanal
   • C) Butan-2-ol
   • D) Butane
4. 4.

   What is the major organic product formed when cyclopentene reacts with bromine ($\text{Br}_2$) in dichloromethane?

   • A) 1,1-dibromocyclopentane
   • B) trans-1,2-dibromocyclopentane
   • C) cis-1,2-dibromocyclopentane
   • D) 1-bromocyclopentene
5. 5.

   What is the major organic product obtained from the electrophilic addition of hydrogen bromide (HBr) to propene in the absence of peroxides?

   • A) 1-bromopropane
   • B) 1,2-dibromopropane
   • C) 2-bromopropane
   • D) 1-bromopropene