Observe the figure given below carefully and answer the following questions.
- Which process is being tested in the activity?
- What is the result of the activity? Give reasons.
- Exhalation process during respiration
- The lime water in test tube ‘B’ turns milky but water in tube A remains unchanged. Because C02 is present in the exhaled air, it mixes with lime water in ‘B’ and turns it milky.