Question

Thermite process is used in reduction of

Solution

Correct option is

Cr2O3

 

Oxides of less electropositive metals such as Cr2O3, Mn3O4 etc are reduced by using Al. this process is called thermite process. 

           

SIMILAR QUESTIONS

Q1

A metal which is refined by poling is

Q2

Wolframite ore is separate from tin stone ore by the process of

Q3

Pb and Sn are extracted from their chief ore by

Q4

‘Lapis-Lazuli’ is a blue coloured precious stone. It is mineral of the class

Q5

Gallium arsenide is purified by

Q6

Which of the following is correct?

Q7

Metals found in free as well as combined states are

Q8

By which of the following processes, the ore is made porous?

Q9

Stainless steel has iron and

Q10

Bauxite ore is made up of Al2O3 + SiO2 + TiO2 + Fe2O3. This ore is treated with conc. NaOH solution at 500 K and 35 bar pressure for few hours and filtered when hot. In the filtrate, the species present are