Dear aspirant

This was one of the question of chemistry in NEET 2021 exam. So answer for this question is 2200k. If you refer to ncert book there is diagram of blast furnace with reaction and temperature mentioned in it. Maximum temperature in that diagram is 2170k in zone of combustion which is nearest to 2200k. So this is the right answer.

In the blast furnace, the maximum temperature is in the Zone of combustion.

• The Blast Furnace is a large steel structure about 30 meters high. It is made up of special firebricks that can withstand temperatures approaching 2000ºC.
• In the furnace gets pre-heated air at about 1000ºC is blasted into the furnace through nozzles near its base.
• In this process, coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace.
• The uses of the Blast furnaces method to produce pig iron from iron ore by the reducing action of carbon.

hope this information helps you

All the best !!