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For the manufacture of Portland cement, the proportions of raw materials used, are

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For the manufacture of Portland cement, the proportions of raw materials used, are Answer: lime 63% ; silica 22% ; other ingredients 15%

Question context

This question is part of 🚧 Civil 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.