Question

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) CH2 + 2O2 --> CO2 + 2H2O

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

Answer 1

Answer:

b

Explanation:

please mark me as a brainliest