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Lime water turns milky when exposed to air and stirred. This shows that air contains:
- a)Oxygen
- b)Carbon dioxide
- c)Hydrogen
- d)Nitrogen
Correct answer is option 'B'. Can you explain this answer?
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Lime water turns milky when exposed to air and stirred. This shows tha...
Understanding Lime Water
Lime water is a dilute solution of calcium hydroxide (Ca(OH)2). When it is exposed to air, especially when stirred, it reacts with carbon dioxide (CO2) present in the air.
Reaction with Carbon Dioxide
- When lime water is exposed to air, it absorbs carbon dioxide.
- The chemical reaction that occurs is:
- Ca(OH)2 + CO2 → CaCO3 + H2O
- This reaction produces calcium carbonate (CaCO3), which is insoluble in water.
Formation of Milky Solution
- Calcium carbonate precipitates out of the solution, resulting in a milky appearance.
- The more carbon dioxide that is absorbed, the cloudier the lime water becomes.
Conclusion
The observation that lime water turns milky when exposed to air demonstrates the presence of carbon dioxide in the atmosphere. This is a simple yet effective experiment to showcase the interaction between lime water and carbon dioxide, confirming that air contains this gas.
In summary, the correct answer to the question is option 'B' – Carbon dioxide.
Lime water is a dilute solution of calcium hydroxide (Ca(OH)2). When it is exposed to air, especially when stirred, it reacts with carbon dioxide (CO2) present in the air.
Reaction with Carbon Dioxide
- When lime water is exposed to air, it absorbs carbon dioxide.
- The chemical reaction that occurs is:
- Ca(OH)2 + CO2 → CaCO3 + H2O
- This reaction produces calcium carbonate (CaCO3), which is insoluble in water.
Formation of Milky Solution
- Calcium carbonate precipitates out of the solution, resulting in a milky appearance.
- The more carbon dioxide that is absorbed, the cloudier the lime water becomes.
Conclusion
The observation that lime water turns milky when exposed to air demonstrates the presence of carbon dioxide in the atmosphere. This is a simple yet effective experiment to showcase the interaction between lime water and carbon dioxide, confirming that air contains this gas.
In summary, the correct answer to the question is option 'B' – Carbon dioxide.
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Lime water turns milky when exposed to air and stirred. This shows that air contains:a)Oxygenb)Carbon dioxidec)Hydrogend)NitrogenCorrect answer is option 'B'. Can you explain this answer?
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Lime water turns milky when exposed to air and stirred. This shows that air contains:a)Oxygenb)Carbon dioxidec)Hydrogend)NitrogenCorrect answer is option 'B'. Can you explain this answer? for Class 6 2024 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about Lime water turns milky when exposed to air and stirred. This shows that air contains:a)Oxygenb)Carbon dioxidec)Hydrogend)NitrogenCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 6 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Lime water turns milky when exposed to air and stirred. This shows that air contains:a)Oxygenb)Carbon dioxidec)Hydrogend)NitrogenCorrect answer is option 'B'. Can you explain this answer?.
Lime water turns milky when exposed to air and stirred. This shows that air contains:a)Oxygenb)Carbon dioxidec)Hydrogend)NitrogenCorrect answer is option 'B'. Can you explain this answer? for Class 6 2024 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about Lime water turns milky when exposed to air and stirred. This shows that air contains:a)Oxygenb)Carbon dioxidec)Hydrogend)NitrogenCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 6 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Lime water turns milky when exposed to air and stirred. This shows that air contains:a)Oxygenb)Carbon dioxidec)Hydrogend)NitrogenCorrect answer is option 'B'. Can you explain this answer?.
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