Advertisements
Advertisements
प्रश्न
What is rust ?
Advertisements
उत्तर १
Rust: Rust is hydrated ferric oxide (Fe2O3 . x* H2O), which forms a brownish red coating over iron. (* x can be any number.)
उत्तर २
The hydrated oxide of iron formed when iron comes in contact with moist air is called rust. This rust is brownish flaky residue and easily crumbles from the metal surface.
4Fe + 3O2 → 2Fe2O3
Iron Oxygen Ferric oxide
संबंधित प्रश्न
A mixture of oxygen and carbon dioxide used for artificial respiration.
State at least two ways of prevent rusting.
State and explain two ways by which air gets polluted in nature.
What happens when Sodium burns in oxygen ? Also give the balanced chemical equation for the reaction.
Oxygen of the air is utilised for ‘combustiop’ and for ‘respiration’. Compare the two with a suitable examples.
Describe simple experiments to show the presence of -
water vapour in air using a glass tumbler and ice.
Distinguish between:
Combustion and Respiration
Distinguish between:
Combustion & Rusting with suitable word equations only?
Give reason for the following:
Combustion and respiration show similarity.
What is meant by burning?
