Write the structural formulas and give IUPAC names for all isomeric alcohols of the molecular formula C H O512
[7 marks]How are alkanes prepared? Give their classification.
[7 marks]How does CH≡CH react with the following reagents?
[7 marks]H /Pd (ii) H /Pd/BaSO4 (iii) HBr22 (iv) Cu Cl /NH OH (v) Na/liqNH (vi) AgNO /NH OH (vii) HCN/Ba(CN)2
[ marks]What is the structure of carbonyl group? How does it react with; a. HCN b. NaHSO c. NH OH.32
[7 marks]How are thioethers prepared? Discuss their chemical properties.
[7 marks]Discuss the mechanism of SN1 and SN2 reaction of alkyl halide.
[7 marks]1. How does diethyl ether react with the following reagents? a. O /long contact2 b. Cold Conc. H SO24 c. PCl5 2. Ahydrocarbon (A) adds one mole of hydrogen in the presence of a platinum catalyst to form n-Hexane. When (A) is oxidized with hot concentrated KMnO4, a single carboxylic acid containing three carbon is isolated. Give the structure and name of (A).
[4 marks]1. What are Carbonium ions? Arrange the following according to their increasing stability. Explain your answer. a. CH CH CH CH + b. (CH ) C+ c. CH CH (CH )CH+323 2. Explain why benzyl carbonium ion is more stable than ethyl carbonium ion.
[4 marks]Write a equation for the preparation of n-butane from, a. n-Butyl bromide b. Ethyl bromide c. 2-Butene
[7 marks]Write a note on: Oxidation of alcohol. Q.4
[7 marks]Give only reaction for following conversion: a. n-propyl alcohol → Isopropyl alcohol b. Isopropyl bromide → n-propyl bromide c. Isopropyl alcohol → Propane OR1
[7 marks]Explain Wurtz synthesis, Corey-house synthesis and Kolbe’s synthesis for preparation of Alkane.
[7 marks](i) Define Geometrical isomerism. State the necessary condition for a compound to show Geometrical isomerism. Illustrate your answer with examples. (ii) What is Inductive effect? Give one example of a system where this effect is operative.
[3 marks]Draw structure corresponding to the following IUPAC names; a. 2-methyl-1,5-hexadiene b. 2-ethyl-2,2-dimethyl-3-heptene c. 2-amino-3-hydroxy-4oxopentan-1-oicacid d. 1-methyl-1,3-cyclopentadiene e. 1,5-heptadiyne f. 3-chloroprop-1-ene g. 2-methyl-4-nitro-2-pentanol
[7 marks](i) Describe homolytic & heterolytic fission of a covalent bond. How carbocation, carbanion & free radicals are formed. (ii) Write a note on Diazotization reaction.
[4 marks]Write Physical properties of alcohol with explanation
[7 marks]Write only chemical reaction for following conversion: a. Benzene →Benzoic acid b. Benzaldehyde →Nitrobenzene
[7 marks]