Alkenes Knowledge-Based Practice

Questions

1. 1.

   What is the systematic IUPAC name of the alkene with the condensed structural formula $\text{CH}_3\text{CH}(\text{CH}_3)\text{CH}=\text{CHCH}_3$?

   • A) 2-methylpent-3-ene
   • B) 4-methylpent-2-ene
   • C) 2-methylpent-2-ene
   • D) 4-methylpent-3-ene
2. 2.

   What is the hybridization state of the carbon atoms involved in the double bond of an alkene, and what is the approximate bond angle around each of these carbon atoms?

   • A) $sp^3$ hybridization and bond angles of approximately 109.5°
   • B) $sp$ hybridization and bond angles of approximately 180°
   • C) $sp^2$ hybridization and bond angles of approximately 109.5°
   • D) $sp^2$ hybridization and bond angles of approximately 120°
3. 3.

   Which reagent undergoes a rapid addition reaction with an alkene at room temperature in the absence of light, causing its characteristic reddish-brown color to disappear?

   • A) Hot acidified potassium permanganate
   • B) Aqueous sodium hydroxide
   • C) Bromine dissolved in tetrachloromethane
   • D) Concentrated hydrochloric acid
4. 4.

   According to Markovnikov's rule, what is the major organic product obtained from the addition of hydrogen chloride to propene?

   • A) 2-chloropropane
   • B) 1-chloropropane
   • C) 1,2-dichloropropane
   • D) Propane
5. 5.

   Which of the following alkenes can exhibit geometric (cis-trans) isomerism?

   • A) But-2-ene
   • B) Propene
   • C) 2-Methylpropene
   • D) Ethene

Answers and step-by-step solutions appear after you finish the test.