Some Basic Principles of Organic Chemistry
Topics
- Tetravalency of carbon, hybridization and shapes
- Functional groups, homologous series, classification
- Nomenclature (trivial and IUPAC)
- Structural isomerism and stereoisomerism
- Bond fission, free radicals, carbocations, carbanions and their stability
- Electrophiles and nucleophiles
- Inductive effect, electromeric effect, resonance, hyperconjugation
- Types of organic reactions
Chapter tests
See all →Top questions
See all →- Among the given compounds I-III, the correct order of bond dissociation energy of C-H bond marked with * is : Answer: 1. II > I > III Key idea: the more s-character in the carbon, and the less stable the radical left behind, the stronger the C-H bond... 1
- Total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers of molecular formula C_4H_8O is : Answer: 3. 10 Key idea: list all rings of formula C₄H₈O containing O, and count enantiomers/cis-trans. Oxolane (THF): 1. Oxetane with a meth... 1
- Which one of the following compounds can exist as cis-trans isomers? Answer: 4. 1,2-Dimethylcyclohexane Key idea: cis-trans isomerism needs a double bond with different groups on each carbon, or a ring with tw... 1
- The most stable carbocation among the following is: Answer: 1. [structure: methylcyclohexyl carbocation, see figure] Key idea: carbocation stability: tertiary > secondary > primary, and more h... 1
- A compound with a molecular formula of C_6H_14 has two tertiary carbons. Its IUPAC name is: Answer: 4. 2,3-dimethylbutane Key idea: a tertiary carbon is bonded to three other carbons (one C-H). 2,2-dimethylbutane: one quaternary C,... 1
- The correct IUPAC name of the following compound is :[skeletal structure with Cl, OH, Br and a methyl branch] Answer: 2. 1-bromo-5-chloro-4-methylhexan-3-ol Key idea: choose the longest chain containing the -OH group, give -OH the lowest locant, then... 1