Advertisements
Advertisements
प्रश्न
Which metals do not corrode easily?
Advertisements
उत्तर
Metals which have low reactivity such as silver, platinum, gold does not corrode easily.
APPEARS IN
संबंधित प्रश्न
The process of depositing a thin layer of zinc on iron articles is called ______.
Explain why, though aluminium is more reactive than iron, yet there is less corrosion of aluminium when both are exposed to air.
What is corrosion?
What is the corrosion of iron known as?
With the help of labelled diagrams, describe an activity to find out the conditions under which iron rusts.
Name five methods of preventing rusting of iron.
Explain why, when a copper object remains in damp air for a considerable time, a green coating is formed on its surface. What is this process known as?
If copper is kept exposed to damp air for a considerable time, it gets a green coating on its surface. This is due to the formation of ______.
Bronze is an alloy of ______.
What is corrosion? What are necessary conditions for corrosion?
Answer the following question:
What is corrosion? Do gold ornaments corrode? Justify.
Give reason.
Copper and brass utensils should be tinned.
State whether the statement given below is true or false. If false write the correct statement.
Graphite is a lustrous non-metal which conducts electricity.
Observe the following picture and answer the following questions:
- What is rust?
- Write the chemical formula of rust.
- Write the reaction of oxidation of iron at the anode.
- Write the reaction of oxidation of iron at the cathode.
- What is corrosion?
When one of the metals in an alloy is mercury the alloy is called _______.
Write the name.
Method used to present corrosion of copper.
Write a molecular formula for rust.
Give solutions by giving examples of corrosion?
Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
Gold plated ornaments is the example of ______.
