Hydrocarbons: Alkanes, Alkenes, Alkynes - Advanced Concepts

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This section explores the deeper theoretical principles and complex reaction behavior of hydrocarbons, moving beyond basic reactions to explain mechanistic details, selectivity, and structure–reactivity relationships. It is designed for advanced Class 11–12 learners, JEE Advanced aspirants, and undergraduate students aiming for strong conceptual mastery.

In this section, you will study:

  • Detailed reaction mechanisms of alkanes, alkenes, and alkynes

  • Stability of carbocations, carbanions, and free radicals

  • Hyperconjugation and inductive effects in hydrocarbons

  • Regioselectivity and stereoselectivity in addition reactions

  • Markovnikov and anti-Markovnikov additions (peroxide effect)

  • Cis–trans (E/Z) isomerism and its effect on reactivity

  • Comparative reactivity and acidity of alkynes

  • Reaction energetics, intermediates, and transition states

  • NCERT-aligned advanced theory, mechanisms, and exam-oriented questions

The content is structured to enhance conceptual depth, strengthen mechanistic reasoning, and prepare students to solve high-order problems in school exams, NEET, JEE, and undergraduate assessments.

Develop a strong analytical understanding of hydrocarbon chemistry to confidently predict reaction pathways and outcomes under varied conditions.

Q. What is the correct IUPAC name for the compound with the formula C5H10?
  • A. Pentane
  • B. Cyclopentane
  • C. 1-pentene
  • D. 2-pentene
Q. What is the IUPAC name for the compound with the formula C5H10?
  • A. Pentane
  • B. Cyclopentane
  • C. 2-Pentene
  • D. 1-Pentene
Q. Which functional group is present in alkynes?
  • A. Double bond
  • B. Triple bond
  • C. Alcohol
  • D. Ester
Q. Which of the following is a characteristic feature of alkenes?
  • A. Saturated hydrocarbons
  • B. Presence of a double bond
  • C. Presence of a triple bond
  • D. Only single bonds
Q. Which of the following is a functional group characteristic of alkynes?
  • A. -OH
  • B. -NH2
  • C. -C≡C-
  • D. -C=C-
Q. Which of the following is the correct mechanism for the addition of HBr to propene?
  • A. Electrophilic addition
  • B. Nucleophilic substitution
  • C. Radical substitution
  • D. Elimination
Q. Which reaction mechanism is primarily involved in the addition of H2 across an alkene?
  • A. Electrophilic addition
  • B. Nucleophilic substitution
  • C. Radical substitution
  • D. Elimination
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