Advertisements
Advertisements
प्रश्न
Make sentences using the given set of words.
99%, oxygen, nitrogen, air, together
Advertisements
उत्तर
Nitrogen and oxygen together make up 99% of the air.
APPEARS IN
संबंधित प्रश्न
Define the term smog.
“Air is a mixture”. Support this statement citing at least three evidences.
With the help of a labeled diagram, describe a simple experiment to show the presence of oxygen and nitrogen in air using a piece of white phosphorus.
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 component of air which does not support combustion.
Give word equation for the following conversion:
Nitric oxide to nitrogen dioxide
Nitrogen is _______ than air.
List out the uses of nitrogen.
Nitrogen gas is so cold that moisture in the air condenses on it, creating a dense fog.
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
Nitrogen
