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Copper is found both in free as well as ...

Copper is found both in free as well as in combined state in nature.

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Knowledge Check

  • Assertion (A): Metals like sodium and potassium are always found in combined state in nature. Reason (R): These metals are highly reactive.

    A
    Both A and R are true and R is the correct explanation of A.
    B
    Both A and Rare true and R is the not the correct explanation of A
    C
    A is true but R is false
    D
    A is true but R is false

  • Metals occur in nature in the free as well as in the combined state. The less reactive metals are generally found in the free state. Most of the metals, however are found in the combined form as minerals. The minerals from which metals can be obtained on a commercial scale are called ores. In other words, the minerals from which metals can be extracted profitably are called ores. Thus, bauxite (Al_(2)O_(3)*2H_(2)O) and clay (Al_(2)O_(3).2SiO_(2).2H_(2)O) are minerals of aluminium. However, it is bauxite that is chiefly used to obtain aluminium commercially. So, bauxite, and not clay, is an ore of aluminium. Metal which occurs in native state is

    A
    Na
    B
    Ca
    C
    Mn
    D
    Ag

  • Metals occur in nature in the free as well as in the combined state. The less reactive metals are generally found in the free state. Most of the metals, however are found in the combined form as minerals. The minerals from which metals can be obtained on a commercial scale are called ores. In other words, the minerals from which metals can be extracted profitably are called ores. Thus, bauxite (Al_(2)O_(3)*2H_(2)O) and clay (Al_(2)O_(3).2SiO_(2).2H_(2)O) are minerals of aluminium. However, it is bauxite that is chiefly used to obtain aluminium commercially. So, bauxite, and not clay, is an ore of aluminium. Which of the following is a sulphide ore ?

    A
    Galena
    B
    Cryolite
    C
    Cuprite
    D
    Bauxite

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    Give the existence of chlorine in the combined state in nature?

    Metals occur in nature in the free as well as in the combined state. The less reactive metals are generally found in the free state. Most of the metals, however are found in the combined form as minerals. The minerals from which metals can be obtained on a commercial scale are called ores. In other words, the minerals from which metals can be extracted profitably are called ores. Thus, bauxite (Al_(2)O_(3)*2H_(2)O) and clay (Al_(2)O_(3).2SiO_(2).2H_(2)O) are minerals of aluminium. However, it is bauxite that is chiefly used to obtain aluminium commercially. So, bauxite, and not clay, is an ore of aluminium. Halide ore is

    Metals occur in nature in the free as well as in the combined state. The less reactive metals are generally found in the free state. Most of the metals, however are found in the combined form as minerals. The minerals from which metals can be obtained on a commercial scale are called ores. In other words, the minerals from which metals can be extracted profitably are called ores. Thus, bauxite (Al_(2)O_(3)*2H_(2)O) and clay (Al_(2)O_(3).2SiO_(2).2H_(2)O) are minerals of aluminium. However, it is bauxite that is chiefly used to obtain aluminium commercially. So, bauxite, and not clay, is an ore of aluminium. The most abundant metal on the earth's crust is

    The only metal which exist in nature as well as combined state is

    Which of the following is the most abundant alkali metal (in combined state) in nature ?

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