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प्रश्न
Define the term Global warming.
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उत्तर
Global warming : An increase in the percentage of carbon dioxide, methane, nitrous oxide and chlorofluorocarbon traps the heat causing the temperature of the earth and its surroundings to rise. This is known as global warming.
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संबंधित प्रश्न
Briefly state the importance of Nitrogen.
Name and briefly explain four ways by which pollution of air is caused by humans.
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.
What are the two necessary conditions for rusting of iron?
Fill in the blank
The supporter of combustion in air is _____.
Name three different appliances where air is utilized.
Of the total volume of air – 4/5th is nitrogen. State the utility or consequence of this ratio.
Explain why during an incident of fire, one is advised to wrap a woollen blanket over a burning object.
Air is a mixture of many _______.
Analogy
Photosynthesis : _____ :: Respiration : Oxygen
