This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ballistics, Subject name: Forensic Medicine
Which type of chocking in SHOT gun produce maximum dispersion of pellets? 
Select and explain. 
A. Fully chocked, B. Half, C. Quaer, D. Three fouh
C: Quaer
Answer: C: Quaer 
Explanation: Firearm are of 2 types - rifled and shotgun weapons. The rifled weapon contains grooves called riffling. In shotgun no grooves are present so it is also known as smooth bore gun in which small lead shots or pellets are used which spreads to other distances when the lead pellets come out. This is called dispersion. To avoid dispersion, choking is done in which terminal end of barrel is narrowed. There are different grades of choking - full choked, half choked, quaer choked So in quaer choking maximum depression is produced.