EASY
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If copper is kept open in air, it slowly develops a green coating on its surface due to formation of

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Important Questions on Metals and Non-Metals

EASY
Science>Chemistry>Metals and Non-Metals>Corrosion
Define corrosion and write two ways to prevent the corrosion.
MEDIUM
Science>Chemistry>Metals and Non-Metals>Corrosion
What is corrosion? Give remedies for the prevention of corrosion.
MEDIUM
Science>Chemistry>Metals and Non-Metals>Corrosion
Mention two ways of preventing rusting of iron.
MEDIUM
Science>Chemistry>Metals and Non-Metals>Corrosion
Corrosion of copper gives rise to a green coating known as _____.
EASY
Science>Chemistry>Metals and Non-Metals>Corrosion
What is corrosion? Write any three methods to prevent corrosion.
 
EASY
Science>Chemistry>Metals and Non-Metals>Corrosion
Which metal doesn't corrode easily?
MEDIUM
Science>Chemistry>Metals and Non-Metals>Corrosion
Copper loses its brown layer gradually when exposed to air. Give reason.
EASY
Science>Chemistry>Metals and Non-Metals>Corrosion
Which is the alloy of copper and tin?
EASY
Science>Chemistry>Metals and Non-Metals>Corrosion

Give reasons:

Aluminium is a highly reactive metal. Yet it is used to make utensils for cooking. 

EASY
Science>Chemistry>Metals and Non-Metals>Corrosion

Explain, why copper reacts with moist carbon dioxide in the air and slowly loses its shiny brown surface and gains a green coat. 

MEDIUM
Science>Chemistry>Metals and Non-Metals>Corrosion
If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of 
MEDIUM
Science>Chemistry>Metals and Non-Metals>Corrosion
State two ways to prevent the rusting of iron.
EASY
Science>Chemistry>Metals and Non-Metals>Corrosion
Silver articles become black on prolonged exposure to air. This is due to the formation of 
EASY
Science>Chemistry>Metals and Non-Metals>Corrosion
Which is not a step of metallurgy?
EASY
Science>Chemistry>Metals and Non-Metals>Corrosion
Which alloy is used in the preparation of statues?
MEDIUM
Science>Chemistry>Metals and Non-Metals>Corrosion
Which elements are used for galvanization?
MEDIUM
Science>Chemistry>Metals and Non-Metals>Corrosion
An alloy that does not contain copper is:
MEDIUM
Science>Chemistry>Metals and Non-Metals>Corrosion
State the differences between rusting and rust.
 
HARD
Science>Chemistry>Metals and Non-Metals>Corrosion
What is rust? Write chemical equation of rusting. 
EASY
Science>Chemistry>Metals and Non-Metals>Corrosion
What is corrosion?