Question

Assertion (A): The minerals from which metals can be extracted profitably are called ores.

Reason (R): All minerals are ores.

विकल्प

• If both A and R are true, and R is the correct explanation of A.

• If both A and R are true, but R is not the correct explanation of A.

• If A is true, but R is false.

• If both A and R are false.

Answer 1

If A is true, but R is false.

Explanation:

The assertion is true because ores are minerals that contain a high enough percentage of metal to make extraction commercially viable and profitable. The reason is false because not all minerals are ores; many minerals contain low metal concentrations or excessive impurities that make extraction impossible or too expensive. A common chemistry rule to remember is that all ores are minerals, but all minerals are not ores.