Which type of organic reaction produces both water and carbon dioxide?
(1) addition
(2) combustion
(3) esterification
(4) fermentation

I believe the correct answer from the choices listed above is option 2. The type of organic reaction that produces both water and carbon dioxide would be combustion. It usually occurs when a hydrocarbon reacts with oxygen to produce carbon dioxide and water.

True, the standard unit for volume is liters which can be represented by either a lower case "l" or a capital "l"