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Assertion: All minerals are ore. Reaso...

Assertion: All minerals are ore.
Reason: Ores are minerals from which metal can be extracted conveniently and economically.

A

If both (A) and ( R) are correct and ( R) is the correct explanation of (A).

B

If both (A) and ( R) are correct, but ( R) is not the correct explanation of (A).

C

If (A) is correct, but ( R) is incorrect.

D

If (A) is incorrect, but ( R) is correct.

Text Solution

Verified by Experts

The correct Answer is:
D
Correct assertion : All ores are minerals, bt all minerals are not ores.
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Minerals from which metals are extracted conveniently and economically are called ____.

Minerals from which metals are extracted conveniently and economically are called ……………… .

Knowledge Check

  • (A) All minerals are ores (R ) Ores are minerals from which metal can be extracted convenitly and economically

    A
    If both (A) and (R ) are correct and (R ) is the correct explantion of (A )
    B
    If both (A) and (R ) are correct and (R ) is not the correct explantion of (A )
    C
    If (A) is correct but (R ) is incorrect
    D
    If (A) is incorrect but (R ) is correct

  • Statement - 1 : All minerals are ores. Statement - 2 : Ores are minerals from which metal can be extracted conveniently and economically.

    A
    Statement - 1 is True, Statement - 2 is True, Statement - 2 is correct explanation of Statement -1.
    B
    Statement - 1 is True , Statement - 2 is not a correct explanation of Statement - 1.
    C
    Statement - 1 is True, Statement - 2 is False.
    D
    Statement - 1 is False, Statement - 2 is True.

  • Assertion : All the ores are mineral.

    A
    If both assetion and reason are CORRECT, and reason is the CORRECT explanation of the assertion
    B
    If both assertion and reason are CORRECT, but reason is NOT the CORRECT explanation of the assertion
    C
    If assertion is CORRECT but reason is INCORRECT
    D
    If assertion is INCORRECT but reason is CORRECT

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

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    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. Metal which occurs in native state is

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