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Water gas is obtained by passing air and a large amount of steam over waste coal at about 650°C.

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Water gas is obtained by passing air and a large amount of steam over waste coal at about 650°C. Answer: Incorrect

Question context

This question is part of ⚙️ Mechanical Eng 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.