Which among the following is (are) double displacement reaction(s)? (t) Pb + CuCl → PbCl2 + Cu (ii) Na2SO4 + BaCl2 → BaSO4 + 2NaCl (iii) C + O2 → CO2 (iv) CH4 + 2O2 → CO2 + 2H2O

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Q. Which among the following is (are) double displacement reaction(s)?
(t) Pb + CuCl → PbCl2 + Cu
(ii) Na2SO4 + BaCl2 → BaSO4 + 2NaCl
(iii) C + O2 → CO2
(iv) CH4 + 2O2 → CO2 + 2H2O

(A) (i) and (iv)
(B) (ii) only
(C) (i) and (ii)
(D) (iii) and (iv)

Correct Answer - Option (B)

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Q. Which among the following is (are) double displacement reaction(s)? (t) Pb + CuCl → PbCl2 + Cu (ii) Na2SO4 + BaCl2 → BaSO4 + 2NaCl (iii) C + O2 → CO2 (iv) CH4 + 2O2 → CO2 + 2H2O

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