In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of

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In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of Answer: Combustion of coal by supplying it around the burner.

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.