Q

Which of the following statements is/are true? A. Out of 114 elements, 32 are non-metals, and others are metals. B. Every ore is a metal but every metal is not an ore.

RRB Group D, 23-Oct-18 S-1 2018
✓ Answer: C A and B are both false
Statement A is false. The modern periodic table contains 118 officially recognized elements, not 114. IUPAC confirmed elements 113, 115, 117 and 118, completing the seventh period. Statement B is also false. An ore is a naturally occurring material from which economically valuable minerals or metals can be extracted; an ore itself is not necessarily a metal.
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