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प्रश्न
Fill in the blanks
Oxygen is used in ___________the food to get _______.
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उत्तर
Oxygen is used in burning the food to get energy.
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संबंधित प्रश्न
Answer the question put against the following constituents of air :
Oxygen : What is the percentage proportion of oxygen in air ? Why is oxygen called active air.
Define the term Global warming.
Define the term smog.
Complete and balance the following chemical equation.
CaO + H2O → ____________
Write ‘True’ or ‘False’ in front of following statement.
The area where a lot of fuel burns has more percentage of carbon dioxide.
Fill in the blank
The supporter of combustion in air is _____.
Write ‘true’ or ‘false for the following;
Carbon dioxide is given out during photosynthesis
_______ and ______ are the two gases, which when taken together, make up about 99 percentage of air.
- Nitrogen
- carbon-di-oxide
- Noble gases
- Oxygen
How do the roots of land plants get oxygen for breathing?
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
Oxygen
