Advertisements
Advertisements
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.
Advertisements
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
Fill in the blank :
________ is the most abundant inert gas present in air.
Briefly state the importance of Oxygen.
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
Fill in the blank
The reddish-brown powder on the surface of iron nails exposed to air and moisture is called _____.
The diagrams below represents an experiment to show the presence of a component of air.
- State why air is sucked from – outlet ‘B’ and not from outlet “A”
- State why the air is sucked ‘slowly’ from the outlet “B”
- State the observation seen after completion of the experiment.
- State the reason for the above observation seen.
- Name another component which if present in air as a pollutant would have given a similar observation
Name the following:
The main, rare (inert) gas present in air.
Inhaled air contains a large amount of carbon-di-oxide.
Why do traffic assistants wear a mask on duty?
The amount of water vapour in the air is more in windy places than in other areas.
______ gas is essential for the proper growth of all plants.
