Advertisements
Advertisements
Question
In the electrolytic reduction of alumina, the lining of graphite acts as an anode.
Options
Right
Wrong
Solution
In the electrolytic reduction of alumina, the lining of graphite acts as an anode- Wrong
APPEARS IN
RELATED QUESTIONS
In the extraction of aluminium: Name the process of concentration of bauxite.
Define the Ore.
How many carats is pure gold? Why is pure gold not suitable for making ornaments?
How is zinc extracted from its carbonate or (calamine)? Explain with equations.
Define the terms gangue.
Name three other metals which are extracted in a manner similar to sodium.
How is copper extracted from its sulphide ore (copper glance), Cu2S? Explain with equations of the reactions involved.
The metal which can be extracted from the bauxite ore is:
(a) Na
(b) Mn
(c) Al
(d) Hg
The metal which can be extracted simply by heating the cinnabar ore in air is:
(a) Zn
(b) Cu
(c) Al
(d) Hg
During galvanisation, iron metal is given a thin coating of one of the following metals. This metal is:
(a) chromium
(b) tin
(c) zinc
(d) copper
Rock salt is an ore of one of the following metals. This metal is:
(a) Mn
(b) Na
(c) Fe
(d) Cu
Which one of the following is not true of metal :
Metals are malleable and ductile
Name the following:
A steel grey coloured solid non-metal.
Usually ______ ores are subjected to ______ which is done in the absence of air.
Froth floatation process is generally used to concentrate ______ ores.
Explain the following reaction with the balanced equation.
Zinc carbonate is heated strongly in limited supply of air
Explain the following reaction with the balanced equation.
Zinc oxide is treated with carbon
The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the ____________.
The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called ____________.
During extraction of metals, electolytic refining is used to obtain pure metals.
(a) Which material will be used as anode and cathode for refining of silver metal by this process?
(b) Suggest a suitable electrolyte also.
(c) In this electrolytic cell, where do we get pure silver after passing electric current?