General Princip...

Assertion: Metals are extracted from minerals, but every mineral is not suitable for the extraction of metals. In fact, the mineral from which a metal is conveniently and economically extracted is called an ore.
Reason: All ores are minerals, but all minerals are not ores.

On which of the following principles is froth flotation process based?

Lead impurity is removed from silver by

In which of the following methods is a metal converted into one of its unstable compounds for refining?

Metal that cannot be extracted by reduction of its oxide by carbon is _____________.

Industrial production of iron from its ore is carried out by smelting in a blast furnace. In the upper part of the furnace, the reduction of iron (III) oxide or haematite to iron occur due to the presence of ___________.

Gold is extracted by hydrometallurgical process, based on its property

In extraction of zinc, the formation of blue flame is due to burning of

The method used to concentrate the mixture of lead sulphide and zinc sulphide ores is

High purity metal can be obtained by using