Which of the following metals can be obtained from haematite ore?

Which of the following metals is obtained by leaching its ore with dilute cyanide solution ?

Which of the following metals is obtained by leaching its ore with dilute cyanide solution ?

The ore of which of the following metals can be concentrated by hydraulic washing?

Which metal is extracted from haematite ?

Which of the following ores can be concentrated by magnetic separation. (i) Zinc blende, (i) Bauxite (iii) Haematite (iv) Magnetite

which of the following ores can be connected by forth magnetic sepuration method ? (i)Haematite (ii)magnetite(iii)siderite(iv)Fool's gold

Which of the following is not an Ore of Iron? Haematite,Magnetite,Malachite,Siderite