question_answer 26)

  Catalytic converters are fitted into automobiles to reduce emission of harmful gases. Catalytic converters change unburnt hydrocarbons into (a) carbon dioxide and water                                      (b) carbon mono oxide (c) methane                                                                       (d) carbon dioxide and methane

Answer:

                  (d) Catalytic converters contain costly metals like rhodium and platinum-palladium as catalysts, and when exhaust gas passes to fitted catalytic converter, the unburnt hydro carbons (cause of cancer) are oxidized into water and carbon dioxide.