Which among the following is (are) double displacement reaction (s)?
(i) `Pb+CuCl_(2)rarrPbCl_(2)+Cu`
(ii) `Na_(2)SO_(4)+BaCl_(2)rarrBaSO_(4)+2NaCl`
(iii) `C+O_(2)rarrCO_(2)`
(iv) `CH_(4)+2O_(2)rarrCO_(2)+2H_(2)O`

Which among the following is (are) double displacement reaction(s)? (i) Pb + CuCl_2 rarr PbCl_2+ Cu (ii) Na_2SO_4 + BaCl_2 rarr BaSO_4 + 2NaCl (iii) C + O_2 rarr CO_2 rarr (iv) CH_4 + 2O_2 rarr CO_2 + 2H_2O

Select the correct equation (s) which represent double displacement reaction? I. Pb+CuCl_(2)toPbCl_(2)+Cu II. Na_(2)SO_(4)+BaCl_(2)toBaSO_(4)+2NaCl III. C+O_(2)toCO_(2) IV. CH_(4)+2O_(2)toCO_(2)+2H_(2)O

Na_(2)S_(2)O_(3)+BaCl_(2) to BaS_(2)O_(3)darr+2NaCl

Na_(2)S_(2)O_(3)+BaCl_(2) to BaS_(2)O_(3)darr+2NaCl

Na_(2)S_(2)O_(3)+BaCl_(2) to BaS_(2)O_(3)darr+2NaCl

Which of the following reactions is a redox reaction? (a). CuSO_(4)+4NH_(3) to [Cu(NH_(3))_(4)]SO_(4) (b). Na_(2)SO_(4)+BaCl_(2) to BaSO_(4)+2NaCl (c ). SO_(2)+H_(2)O to H_(2)SO_(4) (d). 2CuSO_(4)+4KI to Cu_(2)I_(2)+2K_(2)SO_(4)+I_(2)

C+O_(2)rarrCO_(2) the reaction is