This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Temperature and time period in hot air oven is 
Select and explain. 
A. 140 degrees 1 hr, B. 160 degrees 2 hrs, C. 160 1hr, D. 140 2 hrs
B: 160 degrees 2 hrs
Answer: B: 160 degrees 2 hrs 
Explanation: 160 for 2hrs or 170 for 1 hr. or 180 for 30min is temperature and time in hot air oven Hot air oven, red heat, incineration, flaming are eg for dry heat sterilization Ref: CP Baveja 4th ed Pg:30