This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and Health, Subject name: Social & Preventive Medicine
Hot air oven can be used to sterilize all EXCEPT: 
Select and explain. 
A. Scalpels, B. Glassware, C. Plastic Syringes, D. Dressings
C: Plastic Syringes
Answer: C: Plastic Syringes 
Explanation: Ans. (c) Plastic SyringesRef: K. Park 23rd ed. /127-28HOTAIR OVEN* Holding period of 160 C x 1 hour* Used for forceps, glasswares, scissors, scalpels, glass syringes, swabs and few pharmaceutical products like liquid paraffin, fats, grease.