Home / Exams / CDS / CDS_I_2026 / Question
CDS · 2026 Science & Technology › Physics & Chemistry
Which of the following statements relating to the Modern Periodic Table is/are correct ? 1. The atomic radius increases on moving from left to right across a period. 2. Germanium, Tellurium, and Copper are transition metals. 3. The two isotopes of Chlorine occupy the same position in the periodic table. 4. The metallic property of Ca, Ba, Be and Sr follows the order : Be < Ca < Sr < Ba. Select the answer using the codes given below :
🔎 The pattern behind this question
This is the same idea UPSC keeps returning to. Start a free trial to see the answer and the full map.
Across examsCDS 4 · GEO 3 · CSE 1 · NDA 1
Evolution“Periodic table” tested across 6 years (1984–2026)

Study how UPSC repeats — not just the papers

₹199 / 1 year · Founding Member

Full access unlocks the three things no PYQ PDF gives you:
① Cross-exam learning — see the same idea recur across CSE, CAPF, CDS and NDA.
② Topic evolution — how each idea is framed, year by year.
③ Question intelligence — every PYQ + answer, linked to related concepts and similar questions.

e.g. Round Table Conference: CDS 2017 → CSE 2017 → … → CAPF 2024

15 days free, no card required — then ₹199 for 1 year.

Start your 15-day free trial →
💬 Feedback

Send feedback