Advertisements
Advertisements
Question
Name two metals which are highly resistant to corrosion.
Solution
Gold and platinum are highly resistant to corrosion. They are least reactive metals and therefore, they do not react with air, water, acids, alkalis and other gases in the environment.
APPEARS IN
RELATED QUESTIONS
Silver metal does not combine easily with oxygen but silver jewellery tarnishes after some time. How?
How is manganese extracted from manganese dioxide, MnO2? Explain with the help of an equation.
Define the term ore.
Name two metals which are found in nature mainly in the free state (as metallic elements).
How many valence electrons are present in non- metals?
Name a non- metal that has a metallic luster and sublimes on heating.
Which one of the following is not true of metal :
Metal will have 1 or 2 or 3 electrons in their valence shell.
Observe the given figure of reactivity series of metals and answer the following questions:
Reactivity series of metals
- Name two metals which react with water.
- Name two moderately reactive metals.
- Name the most highly reactive metal and the most less reactive metal.
In the electrolytic reduction of alumina, the lining of graphite acts as an anode.
Explain in brief electrolytic reduction of alumina with a neat labelled diagram.