A naturally occurring substance from whi...

A naturally occurring substance from which a metal can be profitably extracted is known as

Ore

Slag

Gangue

Mineral

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Select the appropriate options and complete the following paragraph. (ores, gangue, metallurgy, free, electrolysis, minerals, combined, copper, iron, platinum) Based on their reactivity, most of the metals are found in ___ state in the earth's crust while some metals such as silver, gold and are found in free state. The compounds of metals which occur naturally in the earth's crust are known as ___ . The minerals from which metals can be profitably extracted are called ___ . Ores mined from earth usually contain large amount of impurities like sand , soil , etc. These impurities are called ___ . The extraction of metals from their ores and then refining them for use is known as _____

The mineral from which a metal can be extracted profitably is called ______.

Alkali metals can be extracted form their salts by

Most metals are obtained from minerals. A minerals is obtained by mining and is a naturally occuring substances with a range of chemical compositon. Using the Ellingham diagram, estimate the temperature at which MgO can be reduced to metal by carbon:

Most metals are obtained from minerals. A minerals is obtained by mining and is a naturally occuring substances with a range of chemical compositon. Which of the following metal sulphide is reduced by self reduction?

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A naturally occurring substance from which a metal can be profitably e...
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Iron is removed from cahalcopyrite as
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Which of the following oxide cannot be reduced to metal by carbon ?
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Brine solution on electrolysis will not give.
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Which of the following steps are involved in hydrometallurgical proces...
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Which method is not correct for refining of crude metals ?
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Smelting involves reduction of metal oxide with
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Which of the following srtatement above the advantage of masting of su...
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The principal reaction in the zone of heat absorption of blast furnace...
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Iron is mainly extracted by .
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Electrolytic reduction of alumina to aluminium by Hall-Heroult process...
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Froth floatation process may be used to increase the concentration of ...
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Which of the following statement is incorrect regarding the metallurgy...
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In the metallurgy of iron, the upper layer obtained in the bottom of b...
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A mineral is known as an ore of metal if the metal
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Froth floatation process is used for the metallurgy of
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(viii) Amongest the following groups of oxides, the group containing o...
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In metallurgical processes the flux used for removing acidic impuritie...
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Roasting is done generally in case of
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The most common method of extraction of metals from oxide ores involve
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Froth floatation process for the concentration of sulphide ore is an i...
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