Question

The Metal Aluminium
The metal Aluminium (AI) is widely used in industry. The usage of Al and its alloys ranks only second
to ferrous (or iron) alloys. It is a strong metal whose density is one third of steel. It is also an
excellent conductor of heat and electricity and resistive to corrosion. Pure aluminium exhibits good
corrosion resistance due to the formation of a barrier oxide film that is bonded strongly to its
surface. Hence, Al is known as Self-Protective metal.
Although Aluminium is the most abundant metal on the earth, its extraction requires huge amounts
of electricity. In the Hall-Heroult process of Aluminium extraction, the electrolytic reduction of ore-
aluminium oxide occurs after it is dissolved in molten cryolite (Na: AlFs).
1. Bauxite (Aluminum ore) is mixed with cryolite during the extraction of
aluminium due to which of the following reason(s)?
1 point
(a) it reduces the melting point of the ore
(
0 ()
(b) decreases the electrical conductivity
0 (c) increases its melting point of the ore
(d) acts as a good solvent​

Answer 1

increase its melting point of the ore

Answer 2

Answer:

Answers is (c)

Increases its melting point of the ore.....