What are intermolecular forces? Comment on types of intermolecular forces with examples.
[6 marks]Explain electro-negativity. Comment polarity of bonds and molecules with examples.
[5 marks]Define bonding and anti-bonding orbital’s and explain them in detail.
[5 marks]Give reasons for acceptance of Kekules structure of benzene.
[6 marks]What are 1°, 2° & 3° hydrogen atoms? Comment on the ease of abstraction of each type of hydrogen atom. Support your answer with suitable reactions.
[5 marks]What are nitrenes and carbenes? Comment on generation and reactions of different types of carbenes.
[5 marks]Classify alcohols with examples. Explain Lucas Test.
[6 marks]Enlist various reactions for preparation of alcohols. Comment on oxymercuration-demercuration reaction for preparation of alcohols.
[5 marks]Classify dienes and comment on stability of allyl radical.
[5 marks]Give three methods for preparation of alkanes with example.
[6 marks]What is conformation? Explain conformation of n-butane with potential energy diagram.
[5 marks]Explain Saytzeffs rule and Markonikov’s rule with suitable examples.
[5 marks]Differentiate between E1 and E2 mechanism with examples.
[6 marks]Comment on the following: i. Water is liquid while hydrogen sulphide is gas at room temperature ii. Tri-chloroacetic acid is more acidic than acetic acid.
[5 marks]What are geometric isomers? Comment on orientation of double bond in E1 reaction with suitable example. Q. 6 (a) What are nucelophilic substitution reactions? Explain mechanism and stereochemistry of SN2 reactions.
[6 marks]What are alkynes? Give any four chemical reactions of alkynes with examples.
[5 marks]Comment on the following: i. Pai bonds are weaker than sigma bonds. ii. Length of carbon-carbon triple bond is smaller than double bond.
[5 marks]Give structure and IUPAC nomenclature of the following: Allyl alcohol, Isopropyl chloride, Dimethylacetylene, Isobutylene.
[6 marks]Explain why primary alkyl halides follow SN2 mechanism of reaction.
[5 marks]Comment in detail on utility of Grignard reactions in organic chemistry.
[5 marks]