Question 2
Carbon and its CompoundsWhen a bottle of Coca-Cola is opened, bubbles of gas evolve. The gas is
- A.hydrogen
- B.carbon monoxide
- C.carbon dioxide
- D.sulphur dioxide
- E.chlorine
Show the answer and explanation
Answer: C (carbon dioxide)
Explanation
Fizzy drinks are made by dissolving carbon dioxide under pressure. When the bottle is opened the pressure falls and the CO2 comes out as bubbles.