Advertisements
Advertisements
प्रश्न
What is meant by the 'concentration of ore'?
उत्तर
An ore usually contains some undesired impurities like sand, mud, rocky substances etc. that are present with the metal. These impurities are called gangue. These impurities are required to be removed before extracting the metal from its ore. Several physical and chemical methods are used to remove these gangue substances from the ore. This process of removing gangue substances from the ore to enhance the concentration (percentage) of metal is called the concentration of the ore.
APPEARS IN
संबंधित प्रश्न
Name one metal which is extracted by reduction with aluminium.
Define the term ore.
Give the chemical formula of :
Bauxite
What is meant by concentration of ores?
Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.
In electrolytic reduction of alumina _______ is used as a cathode.
If Cu, Fe, Zn, Al elements are arranged in increasing order of their reactivity then the correct order would be which of the following?
Gold and silver are active metals.
Which of the following ore is concentrated by the Froth floatation process?
Which of the following metals exist in their native state in nature?
(i) Cu
(ii) Au
(iii) Zn
(iv) Ag
