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Chemical elements

3 PYQ across 2 exams · 1992–2023 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 1992 → CDS 2023
19921 PYQ
CSEQ12
Which one of the following is an element?…
20232 PYQs
CDSQ6
Which one among the following are the correct symbols for the elements gold, tin and lead, respectively ?…
CDSQ42
What is the total number of naturally occurring elements ?…
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