Advertisements
Advertisements
प्रश्न
Name the following:
Two metals which are found in the free or native state.
उत्तर
Gold and Platinum.
APPEARS IN
संबंधित प्रश्न
In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.
How are the less reactive metals (which are quite low in the reactivity series) extracted? Explain with the help of an example.
Name one ore of copper (other than cuprite). Which compound of copper is present in this ore? Also, write its chemical formula.
How is aluminium metal extracted? Explain with the help of an equation.
The metal which can be extracted from the bauxite ore is:
(a) Na
(b) Mn
(c) Al
(d) Hg
Give the chemical formula of :
Cryolite
Compare the properties of a typical metal and a non- metal on the basis of the following:
(a) electronic configuration
(b) nature of oxides
(c) oxidizing or reducing action
(d) conductivity of heat and electricity
Name the following:
A compound which is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
Write the name.
The molecular formula of main ore of aluminium –
In extraction of copper, the flux used is ____________.
