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प्रश्न
Which among the following is(are) double displacement reaction(s)?
- `"Pb" + "CuCl"_2 -> "PbCl"_2 + "Cu"`
- `"Na"_2"SO"_4 + "BaCl"_2 -> "BaSO"_4 + 2"NaCl"`
- `"C" + "O"_2 -> "CO"_2`
- `"CH"_4 + 2"O"_2 -> "CO"_2 + 2"H"_2"O"`
विकल्प
(i) and (iv)
(ii) only
(i) and (ii)
(iii) and (iv)
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उत्तर
(ii) only
Explanation -
Only reaction (ii) is double displacement in nature.
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