Advertisements
Advertisements
प्रश्न
Which method of refining is used to get 99.8% pure aluminium?
उत्तर
Electrolytic refining
APPEARS IN
संबंधित प्रश्न
Explain how, mercury is extracted from its sulphide ore (cinnabar). Give equations of the reactions involved.
Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?
(a) Al2O3 + Fe
(b) MnO2 + Al
(c) Fe2O3 + Al
(d) Cu2O + Fe
Give the principles of the froth floatation process.
State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.
Give reasons, why aluminum is used in:
painting electric and telegraphic poles
Name the following:
Two metals which are found in the free or native state.
Name : The metal which is liquid at room temperature.
Name:
The allotrope of the non-metal carbon which conducts electricity.
Which one of the following is not true of metal :
Metals are malleable and ductile
Find the odd one out and give its explanation.
