Respiration in Organisms
Respiration in Organisms > Ask Question to Alfie
Hi
What happens when breathed air is passed through lime water
To prove that the gas we exhale contains carbon dioxide can be shown by the following activity -:
Take a slender, clean test tube, or a glass/plastic bottle. Make a hole in its lid and fix it on the bottle. Pour some freshly prepared lime water in the test-tube. Insert a plastic straw through the hole in the lid in such a way that it dips in lime water. Now blow gently through the straw a few times. Lime water becomes milky. Which shows that exhaled air contains carbon dioxide.
Take a slender, clean test tube, or a glass/plastic bottle. Make a hole in its lid and fix it on the bottle. Pour some freshly prepared lime water in the test-tube. Insert a plastic straw through the hole in the lid in such a way that it dips in lime water. Now blow gently through the straw a few times. Lime water becomes milky. Which shows that exhaled air contains carbon dioxide.
Some of the learners also asked:
Why does the exhaled gas form a film of water vapor on glass surface?
Why does the exhaled gas form a film of water vapor on glass surface?
