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Q.7. Give a test that can be used to differentiate between butter and cooking oil.

               [  A+Av ] (3mark)

               Q.8.How would you distinguish experimentally between an alcohol and a carboxylic
               acid?[  A+Av ] (3mark)

               Q.9.Write chemical equations for what happens when
               (i) sodium metal is added to ethanoic acid.
               (ii) solid sodium carbonate is added to ethanoic acid.
               (iii) ethanoic acid reacts with a dilute solution of sodium hydroxide.[A+Av ] (3mark)

               Q10. An organic compound ‘A’ is an essential constituent of wine and beer. Oxidation of
               ‘A’ yields an organic acid ‘B’ which is present in vinegar. Name the compounds ‘A’ and
               ‘B’ and write their structural formula. What happens when ‘A’ and ‘B’ react in the
               presence of an acid catalyst? Write the chemical equation for the reaction.

                                                                                                                     [  A+Av ] (5mark)


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