1.

Which among the folowing is double displacement reaction(s) ? "(i) "Pb+CuCl_(2)toPbCl_(2)+Cu"(ii) "Na_(2)SO_(4)+BaCl_(2) to BaSO_(4)+2NaCl " (iii) "C+O_(2)toCO_(2)"(iv) "CH_(4)+2O_(2) to CO_(2)+2H_(2)O

Answer»

(i) and (IV)
(II) only
(i) and (ii)
(iii) and (iv)

SOLUTION :The ANIONS and cations are exchanged in the reaction (ii) only.


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