In the electrolytic refining of blister copper, the total number of main impurities, from the following removed as anode mud is ________ . Pb, Sb, Se, Te, Ru, Ag, Au and Pt
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A) : Aluminium is extracted from bauxite by the electrolysis of molten mixture of \( \mathrm{Al_2O_3} \) with cryolite.Reason (R) : The oxidation state of Al in cryolite is \( +3 \).In the light of the above statements, choose the most appropriate answer from the options given below:
Match List -I with List IIChoose the correct answer from the options given below:
The statement that is INCORRECT about Ellingham diagram is :
The metal that can be purified economically by fractional distillation method is:
The addition of silica during the extraction of copper from its sulphide ore:
Which refining process is generally used in the purification of low melting metals?
Match List-I with List-II.
Choose the most appropriate answer from the options given below:
Calamine and Malachite, respectively, are the ores of:
The parameters of the unit cell of a substance are \( a = 2.5 \), \( b = 3.0 \), \( c = 4.0 \), \( \alpha = 90^\circ \), \( \beta = 120^\circ \), \( \gamma = 90^\circ \). The crystal system of the substance is :
The point of intersection and sudden increase in the slope, in the diagram given below, respectively, indicates:
Match List I with List II : (Both having metallurgical terms)
Choose the correct answer from the options given below:
The chemical that is added to reduce the melting point of the reaction mixture during the extraction of aluminium is:
Which of the following reduction reaction CANNOT be carried out with coke?
