Observe figures carefully and answer the following questions.

(a) Which process is being tested in the activity?
(b) What is the result of the activity? Give reasons.

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Solution

(a) The tested experiment is an exhalation procedure during respiration.
(b) In test-tube B, lime water will change into milky but the colour of the test tube A will not change. The reason behind this is 'carbon dioxide'. $C O_{2}$ will present in the exhaled air and mix with lime water. So, lime water will change its colour.

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Observe figures carefully and answer the following questions. ​ (a) Which process is being tested in the activity?​ (b) What is the result of the activity? Give reasons.

Observe figures carefully and answer the following questions.

(a) Which process is being tested in the activity?
(b) What is the result of the activity? Give reasons.