This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Smokeless gun powder is composed of ? 
Select and explain. 
A. KMnO4, B. HCN, C. Nitrocellulose, D. Sulphur
C: Nitrocellulose
Answer: C: Nitrocellulose 
Explanation: Ans. is 'c' i.e., Nitrocellulose Smoke producing powder :- Black powder (black gun powder), Pyrodex. Smokeless powder :- Black powder plus nitrocellulose/nitrocellulose + nitroglycerine/nitroglycerine + nitrocellulose nitroguanidine. Semismokeless powder :- 80% black powder plus 20% smokeless powder.