When steam reacts with red hot coke to form $\mathrm{CO}_{2}$ and hydrogen :

When steam reacts with red hot coke to form $\mathrm{CO}_{2}$ and hydrogen :
  1. Water acts as an oxidising agent.
  2. Water acts as a reducing agent.
  3. Carbon acts as an oxidising agent.
  4. There is no oxidation or reduction.

Solution

$\mathrm{H}_{2} \mathrm{O}+\mathrm{C} \longrightarrow \mathrm{CO}_{2}+\mathrm{H}_{2}$
Steam
$\mathrm{H}_{2} \mathrm{O}$ oxidises $\mathrm{C} \longrightarrow \mathrm{CO}_{2}$
hence $\mathrm{H}_{2} \mathrm{O}$ acts as oxidising agent. .

Asked in: JEE-TOPICTESTS-CHEMISTRY

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