Nitroguanidine is used as a propellant cahrge in: (A) Semismokeless gun powder, (B) Single based smokeless gun powder, (C) Double based smokeless gun powder, (D) Triple based smokeless gun powder
Answer is D. Triple base powder consists of nitrocellulose, nitroglycerin, and nitroguanidine. The quantity of nitroglycerin is small but sufficient to give power; the nitroguanidine lowers the flame temperature while adding an active explosive constituent. Ref - Krishan Vij textbook of forensic medicine and toxicology 5e pg - 239