Question

Given below is the diagram of the experiment set up to show carbondioxide is given out during respiration. Label 'a' and 'b' in the diagram. Mention any two precautions to be taken during this experiment.:

Answer 1

Where is the diagram...mate?

Answer 2

The rise in the level of water indicates that CO2 is produced by germinating seeds during respiration. Actually, the germinating seeds respire and produce CO2, which is absorbed by KOH solution. This creates a vacuum in the conical flask. The air present in the bent glass tube moves into the conical flask. This pulls the water in the bent tube further up.