Observe Figure carefully and answer the following questions. [2 marks]
(a) Which process is being tested in the activity?
(b) What is the result of the activity? Give reasons.
Open in App
Solution
(a) The presence of carbon dioxide in the exhaled air is being tested here. (1 mark)
(b)The lime water in the beaker turns milky white. It is because carbon dioxide present in the exhaled air mixes with lime water in the beaker and turns it milky white. (1 mark)