Question

Which among the following is double displacement reaction:
(i) Pb+CuCl2------> PbCl2+Cu
(ii) Na2SO4+BaCl2------> BaSO4+2 acl
(iii) C+O2-----> CO2
(iv) CH4+2O2-----> CO2+225

a)(i) and (ii)
b)only (ii)
c)(i) and (ii)
d)(iii) and (iv)​

Answer 1

Explanation:

b) Only (ii)

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Answer 2

only (......i).......