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प्रश्न
Give two examples of the following substance.
Building materials
उत्तर
Two examples of Building materials:
1. Cement
2. Steel
3. Glass
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संबंधित प्रश्न
How is chemistry helpful in improving the health of human beings?
Name the scientists who discovered the following:
Atoms
Name the scientists who discovered the following:
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Give reasons for the following
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