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Periodic table

9 PYQ across 4 exams · 1984–2026 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 1984 → CDS 2015 → NDA 2021 → GEO 2024
19841 PYQ
CSEQ29
Chlorine is…
20151 PYQ
CDSQ41
How many elements are there in the 5ᵗʰ period of modern periodic table ?…
20211 PYQ
NDAQ62
Which of the following sets of elements has the same valency ?…
20241 PYQ
GEOQ5
Who among the following scientists developed the Modern Periodic Table ?…
20252 PYQs
CDSQ53
If atomic number of an element is 11, the correct name, symbol and valency are :…
GEOQ27
Which one of the following properties of an element was considered by Mendeleev in order to form his Periodic Table?…
20263 PYQs
CDSQ21
Match List-I with List-II and select the answer using the codes given below the Lists : List-I (Symbol of Element) A. Sm B. Cs C. Os D. Np L…
CDSQ30
Which of the following statements relating to the Modern Periodic Table is/are correct ? 1. The atomic radius increases on moving from left …
GEOQ72
Consider the following statements in respect of noble gases : I. They are p-block elements. II. They are highly active. III. They have compl…
Related concepts — explore their timelines too
ValencyNoble gasesPeriodic trendsHenry Moseley
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