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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

`pb+CuCl_2 rarr PbCl_2+Cu`

B

`Na_2SO_4+BaCl_2 rarr BaSO_4 +2NaCl`

C

`C+O_2 rarr CO_2`

D

`CH_4+2O_2 rarr CO_2+2H_2O`

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-Give balanced chemical equation
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