Advertisements
Advertisements
प्रश्न
“Air is a mixture”. Support this statement citing at least three evidences.
Advertisements
उत्तर
“Air is a mixture” The following are in evidences which prove that air is a mixture.
- The composition of air varies from place to place and from time to time.
- The components of air retain their individual properties.
- Liquid air has no definite boiling point.
- No energy exchange occurs when the components of air are mixed with each other.
APPEARS IN
संबंधित प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
Water containing dissolved carbon dioxide can dissolve marble.
Tick (√) the most appropriate answer.
The presence of water vapour in air is essential for :
Name three noble gases present in the air. State their one industrial use
What are fuels?
Compare the three main components of air i.e. nitrogen, oxygen and carbon dioxide with reference to their density and solubility, nature and reactivity.
What is the percentage of nitrogen in air?
Classify the following.
( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)
| Things which give out oxygen | Things which give out carbon dioxide |
______ is the active component of air.
The second major component of air is oxygen.
Make sentences using the given set of words.
99%, oxygen, nitrogen, air, together
