निम्नलिखित अभिक्रियाओं में ऑक्सीकारक को पहचानिए।
(a) `Pb_(3)O_(4)+8HC1rarr3PbC1_(2)+C1_(2)+4H_(2)O`
(b) `2Mg+O_(2)rarr2MgO`
(c) `CuSO_(4)+ZnrarrCu+ZnSO_(4)`
(d) `V_(2)O_(5)+5Cararr2V+5CaO`
(e) `3Fe+4H_(2)OrarrFe_(3)O_(4)+4H_(2)`
(f) `CuO+H_(2)rarrCu+H_(2)O`

Explanation

(a)`Pb_(3)O_(4)`
(b)`O_(2)`
(c )`CuSO_(4)`
(d)`V_(2)O_(5)`
(e) `H_(2)O`
(f) `CuO`