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Question
Give a reason why nitrogen is filled in food packets and not oxygen.
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Solution
Nitrogen being inert or unreactive is filled into food packets to drive out the oxygen and reduce bacterial growth. The food package then stays well preserved.
RELATED QUESTIONS
Answer the question put against the following constituents of air :
Water vapours : Explain their role in modifying the earth’s climate.
A fuel when used releases least amount of pollutants in the air.
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
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
Tabulate the various components of air, including the components with variable composition.
______ is the percentage of nitrogen in air.
_______ and ______ are the two gases, which when taken together, make up about 99 percentage of air.
- Nitrogen
- carbon-di-oxide
- Noble gases
- Oxygen
Why do traffic assistants wear a mask on duty?
What is the presence of harmful substance in the air called?
Nitrogen gas is so cold that moisture in the air condenses on it, creating a dense fog.
