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प्रश्न
What are the main components of air?
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उत्तर
Main components of air are:
- Nitrogen
- Oxygen
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संबंधित प्रश्न
Give a reason why water droplets appear on the outer surface of a tumbler containing ice.
State the utility of oxygen for respiration in plants
Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.
Complete the statement given below by filling in the blank with the correct word from the words given
___________is an example of a pollutant present in the air.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The mesosphere in the atmosphere, contains most of the air, fit for respiration
Give word equation for the following conversion:
Nitrogen dioxide to nitric acid
What happens if the percentage of oxygen in the air reaches to 70%?
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
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Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.
- Bubbles of air came out from the bottle.
- Some water entered the bottle.
- Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.
- No bubbles formed, only water entered the bottle.
Which observations is/are correct?
