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प्रश्न
Fill in the blank
The reddish-brown powder on the surface of iron nails exposed to air and moisture is called _____.
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उत्तर
The reddish-brown powder on the surface of iron nails exposed to air and moisture is called rust.
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संबंधित प्रश्न
Define the term Global warming.
What are the causes of air pollution?
What is nitrogen-fixation?
Describe a simple experiment to show that l/5th of air is oxygen.
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 is the source of oxygen gas in air?
The constituent of air that supports combustion is _____.
The main component of air is oxygen.
______ exists in nature as silicates, carbonates, oxides, and water. It also exists in a free state as part of the air in the atmosphere.
