Three compounds A, B and C have the molecular formula C.HO. All three compounds give a yellow precipitate with 2,4-dinitrophenylhydrazine.Reagent, A and C also give a silver mirror with ammoniacal

silver nitrate solution. (b)What class of compound is produced when A and C are reduced? Write down the name of the organic compound formed when substance A is heated with acidified sodium dichromate (VI), and state the colour of the remaining solution.(c)[3 marks]