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Elements or compounds which occur natura...

Elements or compounds which occur naturally in the earth's crust is known as:

A

Metallurgy

B

Minerals

C

Ore

D

Gangue

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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 _____

Most abundant element in earth's crust is

Knowledge Check

  • The earth's crust is the thinnest

    A
    under the mountain ranges
    B
    under continental masses
    C
    at ocean bottoms
    D
    at mid-oceanic ridges

  • The most abundant metal in the earth's crust is

    A
    Magnesium
    B
    Aluminium
    C
    Calcium
    D
    Iron

  • The most abundant metal in the earth's crust is

    A
    Calcium
    B
    Aluminium
    C
    Iron
    D
    Magnesium

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    The most abundant metal is the earth's crust is

    The most abundant element in the earth crust is

    The most abundant element in the earth crust is

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