EASY
Earn 100

Which of the following method is used to prevent rusting of iron?

50% studentsanswered this correctly

Important Questions on Metals and Non-metals

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

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 of Metals

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 of Metals
State the differences between rusting and rust.
 
MEDIUM
Science>Chemistry>Metals and Non-metals>Corrosion of Metals
State two ways to prevent the rusting of iron.
HARD
Science>Chemistry>Metals and Non-metals>Corrosion of Metals
What is rust? Write chemical equation of rusting. 
EASY
Science>Chemistry>Metals and Non-metals>Corrosion of Metals
What is corrosion? 
HARD
Science>Chemistry>Metals and Non-metals>Corrosion of Metals
Explain an activity to show that air and water are necessary for rusting to take place.
EASY
Science>Chemistry>Metals and Non-metals>Corrosion of Metals
Give examples of articles made from iron, which are protected from rusting by:
Tinning
Electroplating
MEDIUM
Science>Chemistry>Metals and Non-metals>Corrosion of Metals
What is meant by rust? Give its chemical formula.
MEDIUM
Science>Chemistry>Metals and Non-metals>Corrosion of Metals
Write chemical equation to show the process of corrosion of iron.
MEDIUM
Science>Chemistry>Metals and Non-metals>Corrosion of Metals

Write scientific reason.

Lemon or tamarind is used for cleaning copper vessels turned greenish.

EASY
Science>Chemistry>Metals and Non-metals>Corrosion of Metals
Give examples of articles made from iron, which are protected from rusting by:
Oiling or greasing.