In this post, you will learn about activity 6.4 NCERT class 10 science Life Processes which belongs to chapter 6 NCERT solutions. You can also go through activity 6.3 class 10 science life process.
Explain Activity 6.4 NCERT Class 10 Science Life Processes
You can learn object, material required, procedure, observation, and conclusion of activity 6.4 NCERT class 10 science life processes.
Activity 6.4
Object
– Carbon dioxide is exhaled during respiration
Material Required:
Two test tubes, lime water, air pump (small) with rubber tubing, a glass tube.
Procedure: (i) Take freshly
prepared lime water in a test tube.
(ii) Blow air
from the mouth into this lime water with help of a glass tube.
(iii) Now take the same amount of lime water in another test tube.
(iv) With the help of a small air pump blow air
into this lime water. For this fit a rubber tubing at the mouth of the air pump.
 |
| Carbon dioxide is exhaled during respiration |
Observation:
In test tube (B) lime water turns milky within a short period of time. In the second
test tube, the lime water remains unaffected.
Inference: Lime water turns
milky only when carbon dioxide is mixed with it. Actually, the calcium oxide is
converted into white calcium carbonate in the presence of carbon dioxide.
Experiment shows that exhaled air contains carbon dioxide and proves that
carbon dioxide is produced during respiration. As there is a very little amount
of carbon dioxide in the fresh air the lime water didn’t turn milky with its imperiality.
Related Searches
Related Topics –
1. Previous activity – Activity 6.3
2. Next activity - Activity 6.5
3. Solution of Chapter 6 Life Processes
4. MCQof chapter 6 Life Processes
5. Extraquestions of chapter 6 Life Processes
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