Give structural formula of the following compounds. 1) Isobutene, 2) Cinnamyl alcohol, 3) 1,6-hexadiene, 4) 2,3- dimethyl-4-pentyne, 5) Vinyl bromide, 6) 2,2,4-trimethylpentane.
[6 marks]Explain different types of bond giving examples.
[5 marks]Write a note on Molecular orbital theory.
[5 marks]Justify the following statements. 1) 1, 3-butadiene is more stable than 1, 2-butadiene. 2) Acetylene is more acidic than ethane. 3) Epoxides are more reactive than ether.
[6 marks]Write reactions of naphthalene and anthracene.
[5 marks]How will you distinguish between primary, secondary and tertiary alcohol?
[5 marks]What are polynuclear aromatic compounds? Explain in detail Haworth synthesis for naphthalene.
[6 marks]What is symmetrical and asymmetrical ether? Write a brief note Williamson’s ether synthesis.
[5 marks]Define Nitrenes. Explain the structure and reactions of Nitrenes.
[5 marks]Give types, preparation and reaction of dienes.
[6 marks]Differentiate: SN1 and SN2 reactions.
[5 marks]Enumerate various methods for quantitative estimation of nitrogen. Describe in detail about Dumas method.
[5 marks]Define and explain following terms. 1) Inductive effect, 2) Electrophile, 3) Stearic effect, 4) Polarity of bonds, 5) Carbanion, 6) Substitution reaction.
[6 marks]Define hybridization. Explain hybrid orbitals with examples.
[5 marks]State Saytzeff’s orientation and Markovnikov rules with examples. Q. 6 (a) Justify the following statements. 1) Nitro group, when attached to benzene, activates the ring. 2) Bromination of alkane is more selective than chlorination. 3) Benzene undergoes electrophilic substitution reaction.
[6 marks]Differentiate: E2 and E1 mechanism of elimination.
[5 marks]What are epoxides? Explain anti hydroxylation by the cleavage of epoxides.
[5 marks]Give structural formula of the following compounds. 1) Diallyl ether, 2) Cis-4-methyl-2-pentene, 3) 2,2,3,3 tetramethylhexane 4) β-naphthol, 5) m-xylene, 6) Isopropylbenzene.
[6 marks]Describe the importance of resonance and hyperconjugation in stability and reactivity of molecules.
[5 marks]Write the mechanism and limitations of Friedel-Crafts acylation of benzene.
[5 marks]