Classification of Hydrocarbons.
Aliphatic Hydrocarbons:
Alkanes – Nomenclature, isomerism, conformations (ethane only), physical properties, chemical
reactions including free radical mechanism of halogenation, combustion and pyrolysis.
Alkenes– Nomenclature, structure of double bond (ethene), geometrical isomerism, physical properties,
methods of preparation; chemical reactions: addition of hydrogen, halogen, water, hydrogen halides
(Markovnikov’s addition and peroxide effect), ozonolysis, oxidation, mechanism of electrophilic addition.
Alkynes – Nomenclature, structure of triple bond (ethyne), physical properties, methods of preparation,
chemical reactions: acidic character of alkynes, addition reaction of - hydrogen, halogens, hydrogen halides
and water.
Aromatic hydrocarbons – Introduction, IUPAC nomenclature; Benzene: resonance, aromaticity ;
chemical properties: mechanism of electrophilic substitution – nitration sulphonation, halogenation, Friedel
Craft’s alkylation and acylation; directive influence of functional group in mono-substituted benzene;
carcinogenicity and toxicity.
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