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Which among the following is (are) doubl...

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`

A

`(i) and (iv)`

B

Only(ii)

C

`(i) and (ii)`

D

`(iii) and (iv)`

Text Solution

Verified by Experts

The correct Answer is:
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 (cations and anions of both reactants are exchanged).
`Na_(2)SO_(4)+BaCl_(2)rarrunderset("White ppt.")(BaSO_(4))+2NaCl`
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