question_answer 35)

  Which among the following is (are) double displacement reaction(s)? (i) (ii) (iii) (iv) (i) and (iv)                           (b) Only (ii)                         (c) (i) and (ii)                      (d)  (iii) and (iv)

Answer:

  (b) In double displacement reaction, two compounds exchange their ions to form two new compounds. Only in reaction (ii), exchange of ions is taking place reactions and anions of both reactants are exchanged).