General Medicine General 37926254 Black gun powder composition - A Carcoal 60% + Potassium nitrate 20% + sulphur 20% B Charcoal 25% + Potassium nitrate 70% + sulphur 05% C Charcoal 15% + Potassium nitrate 75% + sulphur 10% D Charcoal 65% + Potassium nitrate 20% + sulphur 15%