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प्रश्न
What are the two ways in which nitrogen fixation occurs?
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उत्तर
1. Natural process.
2. Non-biological fixation.
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संबंधित प्रश्न
Fill in the blank :
________ is the most abundant inert gas present in air.
Describe a simple experiment to show that l/5th of air is oxygen.
Briefly state the importance of Oxygen.
Give the chemical name of rust.
Write ‘true’ or ‘false for the following;
The composition of air was discovered by Lavoisier.
Classify the following.
( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)
| Things which give out oxygen | Things which give out carbon dioxide |
List uses of oxygen.
______ gas is essential for the proper growth of all plants.
Assertion: Carbon dioxide occurs as carbonates in nature.
Reason: Carbon dioxide can exist as a liquid at atmospheric pressure.
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?
