Question

The Alumina thermite process involves reduction of chromium with oxide and aluminium.
A. True
B. False

Answer 1

Hint- In order to comment about whether the given statement is true or not, first we will elaborate the term thermite process further we will write its equation and according to it we will comment on the statement given above.

Complete step-by-step answer:
A thermite reaction is basically iron oxide (rust) that reacts to molten iron with aluminium. Aluminum oxide, elemental iron, and a significant quantity of heat are the materials. The reactants are usually aluminum powder and iron oxide (rust) powder, or the thermite blend. It continues to react as the mixture is heated because the aluminum becomes more reactive than iron and aluminum forms deeper and more stable bonds with oxygen than iron.

Therefore, the technique of Goldschmidt or the thermite cycle is a way of separating metals by reducing oxide with aluminum powder. Using this process almost all metallic oxides are reducible, with the only exception being magnesium oxide.
Reaction of Alumina thermite process is:
$C{r_2}{O_3} + 2Al \to 2Cr + A{l_2}{O_3}$
Hence the given statement “Alumina thermite process involves reduction of chromium with oxide and aluminium” is true.
So, option A is the correct answer.

Additional information-
Thermite process usages:
The reaction is used to weld thermite, also used to connect train lines.
Thermites are exceptionally high in temperature and are also used in the manufacturing of steel, weapons disposal and firearms.
Certain thermite mixtures are used in the fireworks.
There is a thermite reaction used to purify the ores of other metals called thermite phase.

Note- Reduction is a chemical reaction involving the obtaining of electrons from one of the atoms involved in the two chemical reactions. The concept refers to the element that rejects electrons, as it reduces the oxidation state of the element that loses electrons.