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Person Henry Moseley
Asked 2 times across 2 UPSC exams over 5 years (2019–2024), peaking in 2019.
Key insights
- Most tested in CDS — 1 of 2 PYQs
- Most asked in 2019
- Recurs across 2 years (2019–2024)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CDS 2019 → GEO 2024
How the concept evolved
Rising — more than half its appearances (2 of 2) are since 2016.
Related concepts
Ideas UPSC tests alongside this one — keep exploring.
Sample questions
You've seen the pattern — here are a few of the actual PYQs.
GEO2024
Who among the following scientists developed the Modern Periodic Table ?
- A Henry Moseley ✓
- B Dmitri Ivanovich Mendeleev
- C John Alexander Newlands
- D Johann Döbereiner
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
CDS2019
Consider the following statement : "Atomic number of an element is a more fundamental property than its atomic mass." Who among the following scientists has made the above statement ?
- A Dmitri Mendeleev ✓
- B Henry Moseley
- C J.J. Thomson
- D Ernest Rutherford
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
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