TO LEARN THE USE OF A CARBON DIOXIDE FIRE EXTINGUISHER : All chemical laboratories should be provided with carbon dioxide and or dry chemical fire extinguishers. Carbon dioxide fire extinguisher is most suitable because labs contain a variety of chemicals and instruments electronic equipment. Carbon dioxide extinguisher requires skills for the effective use and these skills can be acquired easily. This activity is designed as a demonstration exercise where your counsellor would create a mock fire and show how to extinguish it with the help of a carbon dioxide fire extinguisher.