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प्रश्न
Carbon dioxide with water changes
विकल्प
blue litmus to red
red litmus to blue
blue litmus to yellow
doesn’t react with litmus
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उत्तर
Blue litmus to red
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संबंधित प्रश्न
Describe a simple experiment to show that l/5th of air is oxygen.
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
Dust particles help in the ________ of water vapour in air.
What happens when Carbon burns in oxygen ? Also give the balanced chemical equation for the reaction.
What do you observe when Ice cold water is filled in a glass tumbler.
Give a reason why two different rare (inert) gases find application in advertisement signs and fluorescent bulbs.
Write the percentage of the gases present in air.
Arrange the following statements in correct sequence
- Plants manufacture food by a process called photosynthesis.
- Plants require energy for their growth.
- Plants take in oxygen and release carbon dioxide just as animals.
- Plants take carbon dioxide from the atmosphere, use chlorophyll in the presence of sunlight and prepare food.
- Such oxygen is available to animals and human beings for breathing.
- During this process, oxygen is released by plants.
Analogy
Photosynthesis : _____ :: Respiration : Oxygen
A gas that neither burns nor supports burning is ______.
Observe the picture given in Fig. carefully and answer the following questions.
Can you comment on the air quality of the place shown in Fig?
