The insecticidal properties of DDT were discovered by: ((MCAER 2014))

✅Explanation: An autoclave is a high-pressure steam sterilizer. It uses moist heat to kill microorganisms, making it a crucial tool in healthcare, laboratory, and food processing settings.

🔑Key Points:
-Autoclave: it is a pressurized device designed to heat aqueous solutions above their boiling point at normal atmospheric pressure to achieve sterilization.
-Autoclaves leave no chemical residue compared to other forms of sterilization.  
-An autoclave is the most popular example of moist heat sterilization.
-An autoclave is a machine to sterilize surgical and laboratory equipment.
-It was first invented by Charles Chamberland in 1879.
-It uses steam for sterilization.
-Superheated steam kills bacteria and spores.

• Working:
-It requires a minimum of 15psi pressure.
-The temperature is 121-degree C or 250°F.
-The time required for sterilization is at least 30 minutes.
-Never autoclave any flammable, reactive, corrosive, toxic, or radioactive materials.

• Most autoclaves contain:
-A sterilizing chamber to place articles
-A steam jacket where steam is maintained
-Steam flows from the steam jacket into the sterilizing chamber.
-Cool air is forced out.
-A special valve increases the pressure to 15 pounds/square inch above normal atmospheric pressure.