General Principles and Processes of Isolation of Elements

General Principles and Processes of Isolation of Elements

These MCQs are intended for checking your Chemistry subject, Chapter General Principles and Processes of Isolation of Elements knowledge.

Which of the following metals cannot be obtained by reduction of its metal oxide by aluminium ?

Formula of copper pyrite is

An ore of tin containing FeCrO4 is concentrated by

Which of the following ores is concentrated by chemical leaching method?

Malachite is an ore of

Removal of the unwanted materials like sand, clays, etc. from the ore is known as ………., …….. or ……….

Ore of aluminium is

Which of the following sulphides when heated strongly in air gives the corresponding metal without undergoing separate reduction of oxide?

Common impurities present in bauxite are

Concentration of sulphide ore is done by

Which of the following ores cannot be concentrated by magnetic separation?

For which of the following ores froth floatation method is used for concentration?

The powdered ore is agitated with water or washed with running stream of water. The heavy ore particles and lighter impurities are separated. This method of concentration is known as

How do we separate two sulphide ores by froth floatation method?

Sulphide ore of zinc/copper is concentrated by

The oil used as frothing agent in froth floatation process is

The significance of leaching in the extraction of aluminium is

Which of the following metals is extracted using a silica lined convertor?

Which of the following metals is not extracted by leaching?

Heating pyrites to remove sulphur is called

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