PDF chapter test TRY NOW

State whether the following statements are incorrect or correct:
 
1. Oxygen is not important in sustaining a fire. -
 
2. You can put out a fire by throwing a wet sack on the burning material. - 
 
3. If you take the oxygen away, you end up putting out the fire. -
 
4. The wet sack prevents carbon dioxide from entering the burning material. -