question_answer 36)

    Which of the following substances will not give carbon dioxide on treatment with dilute acid?                 (a) Marble                           (b) Limestone                    (c) Baking soda                  (d) Lime             

Answer:

  (d) Lime, CaO (calcium oxide) does not evolve CO2 when reacted with dilute acid. Other given compounds are carbonates and hydrogen carbonates, so evolve CO2 with dilute acid.