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प्रश्न
Carbon dioxide with water changes
पर्याय
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
Define the term Global warming.
Tick (√ ) the most appropriate answer.
Magnesium burns with a dazzling white flame to form magnesium oxide, a powdery mass. The colour of magnesium oxide is :
What are the main components of air?
What are fuels?
Name the components of air with their approximate percentage by volume in air. Does the percentage by volume of each component remain the same, in the atmosphere of different parts of the world? Explain with reasons.
Why is carbon-dioxide gas used to extinguish fire?
Explain why mountaineers carry oxygen cylinders with them?
______ is the percentage of nitrogen 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.
Can you guess why fire extinguishers throw a stream of carbon-di-oxide while putting - off the fire?
