1.

In which of the following reactions, the underlined substance has been reduced ?

Answer»

`UNDERLINE(CO) + CuO rarr CO_(2) + Cu`
`underline(CuO) + 2HClrarrCuCl_(2) + H_(2)O`
`underline(4H_(2)O_((g)))+ 3Ferarr 4H_(2(g)) + Fe_(3)O_(4)`
`underline(C ) + 4HNO_(3) rarr CO_(2) + 2H_(2)O + 4NO_(2)`

Answer :C


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