<prompt> Nitroguanidine is used as a propellant cahrge inSemismokeless gun powderSingle based smokeless gun powderDouble based smokeless gun powderTriple based smokeless gun powder  <response>: 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 