Everything you need for this topic on one page: the ideas, the formulas, the traps, and free lectures that explain it well.
Last updated: 26 October 2026
Nature of C–X bond, SN1 and SN2, elimination, stereochemistry, reactions of haloarenes and uses of polyhalogen compounds.
Printable Haloalkanes and Haloarenes formula sheet: formulas, key ideas and traps on one page. Save it as a PDF for offline revision.
Appears frequently. Mechanism questions are common. Learn the conditions that decide SN1, SN2, E1 and E2.
Prerequisites: General Organic Chemistry (GOC).
Chapter names follow the current rationalised NCERT textbooks. Read these sections before solving PYQs.
| Class | Book | Chapter | Sections JEE asks from |
|---|---|---|---|
| Class 12 | Chemistry Part II | Haloalkanes and Haloarenes | Nature of C–X Bond; Nucleophilic Substitution Reactions; Elimination Reactions; Reaction with Metals; Reactions of Haloarenes |
Question. (R)-2-bromobutane is treated with two different reagents separately: (i) NaOEt in ethanol, and (ii) NaI in acetone. Identify the major organic product in each case and specify the stereochemistry where applicable.
Answer: (i) (E)-but-2-ene (trans-but-2-ene); (ii) (S)-2-iodobutane
This example was solved twice independently and both solutions agree.
Full-chapter free lectures picked from YouTube search results by views, from established JEE channels (mostly in Hinglish). Use the subtopic list to jump straight to the part you need (timestamps come from each video's own chapter list). Watch one, then solve PYQs the same day.
Appears frequently. It is part of the official 'Organic Compounds Containing Halogens' unit in the JEE Main 2027 syllabus.
SN2 reactivity: CH₃X > 1° > 2° > 3°; SN1 reactivity: 3° > 2° > 1°; Saytzeff: more substituted alkene is the major product.
Understand the key ideas from NCERT or one full lecture, learn the formula sheet, then solve 25–30 past JEE questions on the topic. Mechanism questions are common. Learn the conditions that decide SN1, SN2, E1 and E2.
