Which metal is more reactive: iron or zinc?
Zinc is more reactive than iron as it is placed above iron in the reactivity series.
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- Food cans are coated with tin and not with zinc because(a) zinc is costlier than tin(b) zinc has a higher melting point than tin(c) zinc is less reactive than tin(d) zinc is more reactive than tin.
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- Iron is more reactive than copper. Can you write an activity to show this?
- A clean aluminium foil was placed in an aqueous solution of zinc sulphate. When the aluminium foil was taken out of the zinc sulphate solution after 15 minutes, its surface was found to be coated with a silvery grey deposit. From the above observation, it can be concluded that:(a) Aluminium is more reactive than zinc(b) Zinc is more reactive than aluminium(c) Zinc and aluminium both are equally reactive(d) Zinc and aluminium both are non-reactive
- Name the metal which is used for galvanising iron.
- Why copper is a less reactive metal?
- (a) Which metal is extracted from bauxite ore?(b) Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula. (c) Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved. (d) Explain why, the galvanised iron article is protected against rusting even if the zinc layer is broken. (e) Name a common metal which is highly resistant to corrosion.
- Which gas is produced when dilute hydrochloric acid is added to a reactive metal? Write the chemical reaction when iron reacts with dilute H2SO4.
- (a) Name one metal which can displace iron from iron sulphate solution.(b) Name one metal which cannot displace iron from iron sulphate solution.
- What do you mean by zinc metal and galvanising iron, and what is the relation between them?
- (a) Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.(b) What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.
- Uses: Iron, Copper, Aluminium, Zinc
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