Page 2 - Microsoft Word - Home assignment-Hydrocarbons

Q17. Why methane can’t be obtained by Wurtz reaction?

Q18. State Huckel’s rule.

Q19. Write short notes on the following.

(i)Decarboxylation reaction, (ii)Wurtz reaction

Q20. Convert the following.

(i)Benzene to toluene, (ii)Benzene to acetophenone

Q21. An alkene A on ozonolysis gives a mixture of ethanal and

Pentan-3-one. What is the structure and IUPAC name of the alkene?

Q22. An alkene A contains three C-C, eight C-H sigma bonds and one
C-C pi bond. A on ozonolysis gives two moles of an aldehyde of

molecular mass 44u. Write structure and IUPAC name of A.

Q23. Draw the cis and trans structure of hex-2-ene. Which isomer

will have higher boiling point and why?

Q24. Arrange the following in the decreasing order of acid strength.

(i)Benzene, n-Hexane, ethyne

(ii)Ethyne, ethane, ethene

Q25. Complete the following reactions.

(i)CH3CH(Br)CH3 alc. KOH

(ii) CH3CH(Br)CH3 aq. KOH

(iii)CH3-CH2-CH=CH2 + HBr →

(iv) CH3-CH2-CH=CH2 + HBr peroxide

(v)CH3-CH=CH-CH3 alk.KMnO4/4[O]

(vi)CH4 + O2 Cu/523 K, 100 atm