The apparatus is arranged as illustrated. Test-tubes 1 and 2 each contain limewater. Limewater is a colourless solution that becomes cloudy when carbon dioxide is present. Air is pumped through the apparatus. What will the limewater in test-tubes 1 and 2 look like after 10 minutes?
- Atest-tube 1 clear; test-tube 2 clear
- Btest-tube 1 clear; test-tube 2 cloudy
- Ctest-tube 1 cloudy; test-tube 2 clear
- Dtest-tube 1 cloudy; test-tube 2 cloudy