The maximum temperature that can be achieved in blast furnace is :

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Question

The maximum temperature that can be achieved in blast furnace is :

Accepted Answer

Correct Answer: C — Upto 2200 KStep-by-step Solution:In a blast furnace used for the extraction of iron, different temperature zones exist. The hottest zone is near the tuyeres (air inlets) at the base, where coke burns in preheated air: C + O2 → CO2, followed by CO2 + C → 2CO. The maximum temperature achieved in this combustion zone is approximately 2170 K, reported as up to 2200 K.Why other options are incorrect: Option A (5000 K) is far too high, exceeding even the boiling point of iron. Option B (1200 K) corresponds to the upper zone where CO reduces iron oxides, not the maximum temperature. Option D (1900 K) is closer but not the stated maximum as per standard references.Key Concept: Blast furnace temperature zones (approximate): Top zone ~500 K (drying), Middle zone ~800-1100 K (reduction of Fe2O3 by CO), Lower zone ~1500 K (reduction by C), Combustion zone (tuyeres) ~2200 K (maximum).

The maximum temperature that can be achieved in blast furnace is :

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The maximum temperature that can be achieved in blast furnace is :

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