Q

Which of the following statements is/are true? A. Out of 124 elements, 22 are non-metals, and other are metals. B. Every ore is a mineral but every mineral is not an ore.

RRB Group D, 25-Oct-18 S-1 2018
✓ Answer: B Only B is true
Statement A is incorrect because the modern periodic table has 118 elements, not 124. Among these, around 92 are metals, 20 are non-metals, and 6 are metalloids. Statement B is true, as every ore is a mineral, but not all minerals are ores. An ore is a type of mineral that contains a valuable substance that can be extracted economically.