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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
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 space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Sulphur dioxide gas dissolves in water to form ___________ acid.
Write down the composition of three main gases present in air by volume.
Give a reason why water droplets appear on the outer surface of a tumbler containing ice.
Give word equation for the following conversion:
Nitric acid to soluble nitrates in the soil
Explain why mountaineers carry oxygen cylinders with them?
All living things use oxygen for breathing.
Observe the picture given in figure carefully and answer the following questions.
- What is covering the nose and mouth of the police man?
- Why is he putting a cover on his nose?
- Can you comment on air quality of the place shown in the figure?
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
Carbon dioxide
On a Sunday morning Paheli’s friend visited her home. She wanted to see some flowering plants in the nearby garden. Both of them went to the garden. While returning from the garden they also observed some flowering plants on the road side. But to their surprise they found that the leaves and flowers of these roadside plants were comparatively very dull. Can you help them to know why?
