Advertisements
Advertisements
Question
Name the following:
Two metals which occur in nature in free state as well as in combined state.
One Word/Term Answer
Solution
platinum and gold
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
What is galvanization? How does it protect iron from rusting?
State a reason why zinc is used in:
cosmetics?
Define the term : Mineral
Name the process of concentration
(a) Based on densities
(b) Based on magnetic nature.
Give composition and uses of the following alloys. Mention the reason for its use.
Magnalium
Explain the following:
Cold water has no action on aluminium.
What is added to steel to make it stainless steel?
Write the equation for the reaction of zinc with following: Dilute sulphuric acid
Bauxite : Aluminium ore : : Cassiterite : _______
Draw diagram of magnetic separation process and answer the questions based on it.
- Give example in which this process can work.
- Suggest any two methods that can also be used for this purpose.
- Which technique is based on hydrophobic and hydrophilic properties of particles?