General Principles and Processes of Isolation of Elements

This is an MCQ-based quiz on General Principles and Processes of Isolation of Elements.

This includes Zone refining, Hydrometallurgy, Liquation, Thermite process, Baeyer’s process, Solvay process, Bergius process, and Hall-Heroult process.

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Cinnabar is an ore of

Hg Ag Sn Al

Pyrolusite is an ore of

Ag Hg Sn Mn

Malachite is an ore of

Hg Cu Sn Mn

The process employed for the concentration of sulphide ore is

Froth floatation Roasting Electrolysis Calcination

Zone-refining is used for the

Concentration of an ore

Reduction of metal oxide

Purification of metal

Purification of an ore.

An ore of tin containing FeCrO4 is concentrated by

gravity separation magnetic separation froth floatation leaching

Common impurities present in bauxite are

CuO ZnO CaO SiO2

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

Haematite Malachite Magnetite Siderite

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

By using excess of pine oil By adjusting proportion of oil to water or using depressant. By using some solvent in which one of the sulphides is soluble By using collectors and froth stabilisers like xanthates

Concentration of sulphide ore is done by

Froth flotation process

Electrolysis

Roasting

None of these

Formula of copper pyrite is

Cu2S CuFeS CuFeS2 Cu2Fe2S2

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

Haematite Zinc blende Magnetite Camallite

Ore of aluminium is

Bauxite

Hematite

Dolomite

None of these

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

Concentration, dressing, benefaction

Separation, refining, gangue

Magnetic separation, purification, gangue

Washing, refining, amalgamation

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

Metallurgy

Leaching

Froth floatation process

Gravity separation

Which of the following is the chief ore of aluminium?

Kaolinite Bauxite Malachite Cinnabar

Which of the following is the finest iron ore?

Hematite Magnetite Siderite Iron Pyrites

What is the composition of brass?

49 percent copper and 51 percent zinc 50 percent copper and 50 percent zinc 37 percent copper and 63 percent zinc 63 percent copper and 37 percent zinc

Which of the following is not a suitable ore for extracting iron?

Hematite Magnetite Siderite Iron Pyrites

What is the concentration of zinc in calamine?

98 percent 94 percent 86 percent 74 percent

Quiz/Test Summary

Title: General Principles and Processes of Isolation of Elements

Questions: 20

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