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Q.
In blast furnace, the highest temperature is in
ManipalManipal 2020
Solution:
In blast furnace the highest temperature is in combustion zone. In the first stage, coke burns to produce $CO _{2}$ which rises temperature.
$C + O _{2} \rightarrow CO _{2}+$ Heat
This reaction is exothermic and hence temperature is $2170\, K$. It is known as combustion zone.