Observe Figure carefully and answer the following questions. (2 marks)

(a) Which process is being tested in the activity? (1 mark)
(b) What is the result of the activity? Give reasons. (1 mark)

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Solution

(a) Exhalation process during breathing (1 mark)
(b) The lime water in test tube ‘B’ turns milky but water in tube ‘A’ remains unchanged. Because carbon dioxide is present in the exhaled air, it mixes with lime water in ‘B’ and turns it milky.( 1mark)

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Question 16

Observe the figure of an activity given, carried out with leaves of plants and polythene bag. Now answer the following.

(a) Which process is demonstrated in the activity?
(b) When will this activity show better results on a bright sunny day or a cloudy day?

(c) What will you observe in the polythene bag after few hours of setting up the activity?
(d) Mention any one precaution you must take while performing this activity?

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.

Observe Figure 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.

Q. Question 17
Observe Figure 10.2 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.

Question 17
Observe Figure 10.2 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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Observe Figure carefully and answer the following questions. (2 marks) (a) Which process is being tested in the activity? (1 mark) (b) What is the result of the activity? Give reasons. (1 mark)

(a) Exhalation process during breathing (1 mark) (b) The lime water in test tube ‘B’ turns milky but water in tube ‘A’ remains unchanged. Because carbon dioxide is present in the exhaled air, it mixes with lime water in ‘B’ and turns it milky.( 1mark)

Observe Figure carefully and answer the following questions. (2 marks)

(a) Which process is being tested in the activity? (1 mark)
(b) What is the result of the activity? Give reasons. (1 mark)

(a) Exhalation process during breathing (1 mark)
(b) The lime water in test tube ‘B’ turns milky but water in tube ‘A’ remains unchanged. Because carbon dioxide is present in the exhaled air, it mixes with lime water in ‘B’ and turns it milky.( 1mark)