7.2 Combustion

the conditon of combustion is

• oxygen + fuel + heat

• oxygen + heat

• heat + fuel

• oxygen + fuel

X is needed in combustion. X is

• oxygen

• carbon dioxide

wood, clothes, book is fuel type

• solid

• liquid

• gas

petrol, diesol, kerosene is fuel type

• solid

• liquid

• gas

butane, propne in gas cylinder is fuel type

• solid

• liquid

• gas

wood, clothes, book is fuel type

• A

• B

• C

petrol, diesol, kerosene is fuel type

• A

• B

• C

butane, propne in gas cylinder is fuel type

• A

• B

• C

Fire extinguisher A type can use to extinguish

• clothes, wood, book

• petrol, alcohol

• propane, electrical device

fire extinguisher type ABC can use to extinguish fuel

• solid, liquid and gas

• electrical devide

• gas only

• liquid only