Home / Topic / Electrochemistry
Topic Electrochemistry
Asked 3 times across 2 UPSC exams over 41 years (1982–2023), peaking in 1982.
Key insights
- Most tested in CDS — 2 of 3 PYQs
- Most asked in 1982
- Recurs across 3 years (1982–2023)
How it travelled across exams
First appearance in each exam — the same idea, reframed.
CSE 1982 → CDS 2016
How the concept evolved
Rising — more than half its appearances (2 of 3) 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.
CDS2023
Which one of the following is not true for anodizing process?
- A It makes aluminium corrosion resistant.
- B Metals like aluminium, titanium and magnesium can be anodized.
- C Clean aluminium article is the anode and oxygen gas is evolved at the cathode. ✓
- D It is used in aircraft industry.
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
CDS2016
In case of a standard hydrogen electrode
- A absolute electrode potential is not zero ✓
- B absolute electrode potential is zero
- C both absolute and standard electrode potential values are zero
- D electrode potential is zero only at 25 °C
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
CSE1982
Metals used in voltaic cell are
- A Zinc and lead
- B Carbon and zinc
- C Zinc and copper ✓
- D Carbon and nickel
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
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 →