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What is Double base smokeless gun powder contains: and explain in detail?
Ans. (D). Nitrocellulose and nitroglycerin(Ref: Review of Forensic Medicine & toxicology; Gautum Biswas; 2nd edition; Pg-215)BLACK gunpowder: Potassium nitrate (75%), Charcoal (15%) & Sulfur (10%)SMOKELESS gun powder:Single base: NitrocelluloseDouble base: Nitrocellulose + NitroglycrineTriple base: Nitrocellulose + Nitroglycerine + NitroguanidineSEMISMOKELESS gunpowder: 80% black & 20% smokeless gunpowder.