Question

Oxygen gas reacts with hydrogen to produce water. The reaction is represented by the equation:
$O_2\left(g\right)+H_2\left(g\right)\to H_{2}O\left(g\right)$
The above reaction is an example of
$1$ Oxidation of hydrogen
$2$ Reduction of oxygen
$3$ Reduction of hydrogen
$4$ Redox reaction

• A. (a), (b) and (c)
• B. (b), (c) and (d)
• C. (a), (c) and (d)
• D. (a), (b) and (d)

Answer 1

The correct option is D (a), (b) and (d)

$O_2+2H_2⟶2H_{2}O$

Here, oxidation state of $O_2$ change from $0$ to $-2$ and hydrogen oxidation state change from $0$ to $+1$. So, $O_2$ is undergoing reduction and $H_2$ is undergoing oxidation.

Since oxidation and reduction are taking place so it is redox reaction.

So, D is the correct option.