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Earn 100

What is the product obtained when nitrogen reacts with oxygen? 

Important Questions on Air

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Science>Chemistry>Air>Nitrogen
Do plants require nitrogen? Why?
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Science>Chemistry>Air>Nitrogen
How do leguminous crops help in increasing soil fertility?
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Science>Chemistry>Air>Nitrogen
To make proteins plants use
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Science>Chemistry>Air>Nitrogen
In what ways are the Rhizobium bacteria useful to plants?
HARD
Science>Chemistry>Air>Nitrogen
Describe how nitrogen gets fixed in nature.
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Science>Chemistry>Air>Nitrogen
Why is nitrogen needed by the living organisms?
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Science>Chemistry>Air>Nitrogen

Given below is the diagram of a bean root :

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What significant role is played by the structure named in X above in the soil? Briefly discuss how the structure plays this role.

EASY
Science>Chemistry>Air>Nitrogen
Where do Rhizobium bacteria live? What is their function?
HARD
Science>Chemistry>Air>Nitrogen
What is nitrogen fixation? How do leguminous plants help in nitrogen fixation?
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Science>Chemistry>Air>Nitrogen
Plants use nitrogen directly from air for growth.
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Science>Chemistry>Air>Nitrogen
Explain the role played by Rhizobium bacteria in increasing the fertility of the soil.
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Science>Chemistry>Air>Nitrogen
What do you understand by nitrogen fixation?
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Science>Chemistry>Air>Nitrogen
Name the microorganisms which can fix atmospheric nitrogen in the soil.
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Science>Chemistry>Air>Nitrogen
What is fixation of nitrogen?
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Science>Chemistry>Air>Nitrogen

Match Column A with Column B.

Column A      Column B
1. Nitrogen i. supporter of combustion 
2. Oxygen ii. significant impact on temperature
3. Carbon dioxide iii. used in metallurgy 
4. Water vapour iv. used to fill air balloons
5. Argon  v. absorbs infrared radiation
6. Helium vi. the main constituent of proteins
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Science>Chemistry>Air>Nitrogen
How do plants obtain nitrogen?
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Science>Chemistry>Air>Nitrogen
In which form do plants absorb nitrogen? Why do farmers add nitrogenous fertilisers to the soil? Which microorganism helps to provide nitrogen to the plants? How do plants absorb nutrients other than carbohydrates from the soil?
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Science>Chemistry>Air>Nitrogen
What is meant by 'nitrogen fixation'? State two ways in which nitrogen gas of the atmosphere can be 'fixed' in nature to get nitrogen compounds in the soil.
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Science>Chemistry>Air>Nitrogen
Which one of the following is not able to fix atmospheric nitrogen?
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Science>Chemistry>Air>Nitrogen
With the help of a well-labelled diagram, describe the nitrogen cycle, with special emphasis on nitrogen fixation.