Mulitple Choice Questions

Gunpowder consists of _____.

1. 75% potassium nitrite + 15% charcoal + 10% sulphur
2. 75% potassium nitrate + 10% charcoal + 15% sulphur
3. 75% potassium nitrite + 8% charcoal + 17% sulphur
4. None of the above

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