In order to maintain an oxidising atmosphere in a furnace, it should have

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In order to maintain an oxidising atmosphere in a furnace, it should have Answer: More of excess air

Question context

This question is part of ⚗️ Chemical Engineering within the broader 🛠️ Engineering Essentials subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.