Advertisements
Advertisements
प्रश्न
Explain concept with example/explain with the help of a balanced equation.
Minerals
Advertisements
उत्तर
- Most metals being reactive do not occur in nature in the free state but are found in a combined state as their salts such as oxides, carbonates, sulphides, and nitrates.
- However, some unreactive metals like silver, gold, platinum, generally occur in a free state.
- The compounds of metals that occur in nature along with the impurities are called minerals.
- For example, bauxite is a mineral of aluminium.
APPEARS IN
संबंधित प्रश्न
Give the importance of the following for living beings:
Nitrogen
Name the methods used for purification?
With a labelled diagram, explain the electro-refining of a particular metal.
`MnO_2 + 4Al`
…………….
`Cu (OH)2`
................................
Give the ionization reactions of electrolyte used in Hall’s process. write the reaction at the cathode and the anode. Why the anode has to be replaced in this process?
Where are the cathode and anode in the electrolytic cell? Name the material used for these?
State two properties of brass that render it more useful for some purpose than its components.
Explain the term Metallurgy.
Complete the following flow chart and answer the questions below:

i) In which method pine oil is used?
ii) Explain what method of concentration in brief.
In Wilfley table method to separate particles of gangue _______ method is used.
Draw a neat and labelled diagram for Froth Floatation Process.
Distinguish between:
Froth floatation - Leaching
Explain concept with example/explain with the help of a balanced equation.
Gangue
Complete flow chart given below.

Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?
Bassemerisation is used in the extraction of ______.
In leaching of alumina from bauxite by Bayer's process, then ore is treated with ______.
Calcination is used in metallurgy for the removal of?
