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प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
The rust formed on the surface of iron easily crumbles.
विकल्प
True
False
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उत्तर
True.
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संबंधित प्रश्न
What is rust ?
State at least two ways of prevent rusting.
State two differences between:
Rusting and burning.
Fill in the blank by choosing the correct word from the given list.
List: oxygen, carbonic, suIphur dioxide gas, precipitation, helium
____________ gas can cause acid rain.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
To prevent rusting, the underside of the ships is coated with __________________.
State four ways of preventing rusting.
Identify the acidic oxides responsible for acid rain. State how their presence results in formation of acid rain. Give a reason why acid rain damages heritage buildings.
Distinguish between:
Combustion & Rusting with suitable word equations only?
Give reason for the following:
Combustion and respiration show similarity.
A process without emitting flame is called as ______.
