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प्रश्न
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
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उत्तर
- Because if we suck from ‘A’, lime water will be sucked out.
- Because if the air is sucked fast, lime water will also be sucked out.
- Lime water turns milky.
- The reason is the formation of CO2.
- Sulphur dioxide
संबंधित प्रश्न
Define the term Global warming.
Statement given below is incorrect. Write the correct statement :
Carbon dioxide gas allows the earth to radiate out heat rapidly.
Tick (√ ) the most appropriate answer.
Magnesium burns with a dazzling white flame to form magnesium oxide, a powdery mass. The colour of magnesium oxide is :
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.
_______ can be seen moving in a beam of sunlight in a dark room.
______ is the main component of air.
The Scottish chemist ______ discovered carbon dioxide is present in air.
When air is moving with cool and soothing, it is called a cyclone.
______ gas is essential for the proper growth of all plants.
