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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

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