Q. Consider the following statements:
1.A rock is an aggregate of one or more minerals but without definite composition of constituent of mineral.
2.Rocks from which minerals are mined are known as ores.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation: aggregate of one or more minerals but without definite composition of constituent of mineral.

  • Rocks from which minerals are mined are known as ores.
  • Although more than 2,800 types of minerals have been identified, only about 100 are considered ore minerals.

Source: NCERT

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