Which among the following is(are) double displacement reaction(s)? (i) Pb + CuCl₂ → PbCl₂ + Cu (ii) Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl (iii) C + O₂ → CO₂ (iv) CH₄ + 2O₂ → CO₂ + 2H₂O
Model Answer & Options
Source: Exemplar(i) and (iv)
(ii) only
(i) and (ii)
(iii) and (iv)
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