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प्रश्न
You are given a test tube with two outlets and a bottle of lime water. Using same, how would you demonstrate experimentally the presence of carbon dioxide in air.
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उत्तर
Procedure:
- Take lime water in a test tube with two outlets ‘A’ and ‘B’ as shown above.
- Air is sucked slowly through the outlet ‘B’.
- Air moves in through end ‘A’ and passes through the lime water
Observation:
The line water in the test tube turns milky.
Conclusion:
Air which is sucked in from and ‘A’ contains carbon dioxide which turns the lime water milky. Hence, air contains – carbon dioxide.
संबंधित प्रश्न
Answer the question put against the following constituents of air :
Oxygen : What is the percentage proportion of oxygen in air ? Why is oxygen called active air.
Name and briefly explain four ways by which pollution of air is caused by humans.
What happens when Carbon burns in oxygen ? Also give the balanced chemical equation for the reaction.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Sulphur dioxide gas dissolves in water to form ___________ acid.
Statement given below is incorrect. Write the correct statement :
Potassium nitrate on strong heating decomposes into potassium nitrite and nitrogen gas.
Explain why during an incident of fire, one is advised to wrap a woollen blanket over a burning object.
List out the uses of carbon dioxide.
______ gas is given to the patients having breathing problems.
During respiration, carbon-di-oxide is exhaled out of the body through the ______.
Nitrogen is about two times more soluble in water than oxygen.
