Alcohols , Phenols , Ethers

 1) How can we get nitro benzene from phenol?2)A hydroxide ion is a weaker base than an alkoxide ion. Justify.3)What happens when tert-butyl alcohol is treated with Cu  at 573 K.4.Alcohols reacts with halogen acids to form haloalkenes but phenol does not form halobenzene. maintained and can be cleared by X– ions.5Preparation of ethers by acid dehydration of secondary or tertiary alcohols is not a suitable method. Give reason.6. Of benzene and phenol, which is more easily nitrated and why?7. How will you account for the following?Ethers possess a net dipole moment even if they are symmetrical in structure?8.  How is diethyl ether prepared from ethyl alcohol ?9.Complete the reaction:(a) CH3OCH3 + PCl5 ?(b) C2H5OCH3 + HCl ?(c) (C2H5)2 O + HCl

10. Explain why phenols do not undergo substitution of the –OH group like alcohols.

12Account for the following:a. Boiling point of the C2H5OH is more than that of C2H5Cl

b. The solubility of alcohols in water decreases with increase in molecular mass

13Which one is stronger acid?propan-1-ol and propan-2-ol

14.What is denaturation of an alcohol?15.Give IUPAC name of CH3OCH2OCH3

16.Diethyl ether does not react with sodium. Explain.17.How do you account for the fact that unlike phenol, 2, 4-dinitrophenol and 2, 4, 6-trinitrophenol are soluble in aqueous solution of sodium carbonate?18.Why is the Dipole moment of methanol higher than that of phenol.19.Suggest a reagent for conversion of ethanol to ethanal.20.Out of 2-chloroethanol and ethanol which is more acidic and why?21. Suggest a reagent for conversion of ethanol to ethanoic acid.22.Out of o-nitrophenol and o-cresol which is more acidic?23. When phenol is treated with bromine water, white precipitate is obtained. Givethe structure and the name of the compound formed.24.Arrange the following compounds in increasing order of acidity and give asuitable explanation.Phenol, o-nitrophenol, o-cresol25Alcohols react with active metals e.g. Na, K etc. to give corresponding alkoxides.Write down the decreasing order of reactivity of sodium metal towards primary,secondary and tertiary alcohols.26.What happens when benzene diazonium chloride is heated with water?27. Arrange the following compounds in decreasing order of acidity.H2O, ROH, HC ≡ CH28. Name the enzymes and write the reactions involved in the preparation of ethanolfrom sucrose by fermentation.29. How can propan-2-one be converted into tert- butyl alcohol?

30. Write the structures of the isomers of alcohols with molecular formula C4H10O. Which of these exhibits optical activity?