Identify the correct option for the substance oxidised and reduced in the following reactions.
$ZnO + C \to Zn + CO$

$4 Na + O_{2} \to 2 N a_{2} O$
$CuO + H_{2} \to Cu + H_{2} O$

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

C and $O_{2}$ are oxidised while $H_{2}$ and $ZnO$ is reduced.

C and $O_{2}$ are reduced while $H_{2}$ and $ZnO$ are reduced.

Na and C are oxidised while $O_{2}$ and $CuO$ are reduced.

C and $CuO$ are oxidised while $H_{2}$ and $ZnO$ are reduced.

answer is C.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

In given reactions Na and C are oxidised while $O_{2}$ and $CuO$ are reduced.
$ZnO + C \to Zn + CO$
$4 Na + O_{2} \to 2 N a_{2} O$
$CuO + H_{2} \to Cu + H_{2} O$
In the above reaction, all are redox reactions. So, in each reaction, one species is reduced and the other is oxidised. In the first reaction, Zn is reduced while C is oxidised. In the second reaction, Na is oxidised while oxygen is reduced. In the third reaction, $CuO$ is reduced while $H_{2}$ is oxidised.