(a) (i) Give reasons for the following: (II) Soap does not form lather in hard water. (III) Carbon shows catenation but silicon does not. (ii) Write chemical equations for the following: (I) Oxidation of ethanol by acidified K2Cr2O7. (II) Hydrogenation of ethene. OR (b) Mohan heated ethanol with a compound 'X' in the presence of a few drops of conc. H2SO4 and observed a sweet smelling compound 'Y' is formed. When 'Y' is treated with sodium hydroxide it gives back ethanol and a compound 'Z'. (i) Identify 'X', 'Y' and ‘Z'. (ii) Write the role of conc. H2SO4 in the reaction. (iii) Write the chemical equations involved and name the reactions. SECTION-C
Question
(a) (i) Give reasons for the following: (II) Soap does not form lather in hard water. (III) Carbon shows catenation but silicon does not. (ii) Write chemical equations for the following: (I) Oxidation of ethanol by acidified K2Cr2O7. (II) Hydrogenation of ethene. OR (b) Mohan heated ethanol with a compound 'X' in the presence of a few drops of conc. H2SO4 and observed a sweet smelling compound 'Y' is formed. When 'Y' is treated with sodium hydroxide it gives back ethanol and a compound 'Z'. (i) Identify 'X', 'Y' and ‘Z'. (ii) Write the role of conc. H2SO4 in the reaction. (iii) Write the chemical equations involved and name the reactions. SECTION-C