Rusting of iron in presence of moist air is an example of:
Slow exothermic chemical change
Rusting occurs when iron reacts slowly with oxygen and moisture in the air to form hydrated iron oxide, a new substance, which makes it a chemical change. Since this oxidation reaction gradually releases a small amount of heat, it is classified as a slow exothermic chemical change.
Similar Questions
Reactivity series of metals is mainly based on tendency to:
A displacement reaction will most likely occur when:
Corrosion of metals is minimised in practice by:
Which one of the following changes is most appropriately classified as a physical change with underlying chemical interaction reversible on conditions?
Important Questions from Chemical Reaction
An iron nail dipped in copper sulphate solution turns brown. This is due to which one of the following types of reactions?
Copper sulphate crystals available in the market are blue coloured crystals. By careful heating, they turn to white colour. Which one of the following is responsible for the blue colour?
Airbags work on the principle of a chemical reaction triggered by the impact producing a gaseous product that causes a sudden volume change. Which one among the following chemical conversions is responsible for this?
Which one of the following is the correct reactivity series with water?
Silver artefacts get tarnished in air due to the formation of
