fezez6604 fezez6604 26-03-2024 Chemistry contestada Which among the following is/are double displacement reaction(s)? (i) pb cucl2 2 pbcl cu (ii) na2 4 so bacl2 4 baso 2nacl (iii) c o 2 2 co (iv) ch4 2 2 2 o c o h 2 2o