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Chemistry

Electrochemistry

A Chemistry chapter of the NEET syllabus, and how to practise it for the computer-based exam.

Exam rules change between cycles. Confirm dates, syllabus and pattern against NTA's official site. We are not NTA.

Weightage: what the paper actually did

Electrochemistry carried 4 questions in the NEET 2026 paper. One paper is a data point, not a destiny: NTA moves weight between chapters every cycle, which is why the weightage tables deserve care. The stable facts are the paper's shape: 180 questions, 720 marks, +4 right, −1 wrong.

Sample PYQs from this chapter

Real questions NTA asked from Electrochemistry, with the answer and the working. Try before you peek.

Question 1 · NEET 2026

A solution of copper sulphate is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at cathode is: (Given: Molar mass of Cu = 63 g mol−^{-}1^{1}; 1 F = 96487 C mol−^{-}1^{1})
  1. A.1.7018 g
  2. B.0.2938 g
  3. C.2.4036 g
  4. D.0.5876 g
Answer and explanation

Answer: B

Charge passed Q=i t=1.5×(10×60)=900Q = i\,t = 1.5 \times (10\times 60) = 900 C. Deposition follows Cu2++2e−→Cu\mathrm{Cu}^{2+} + 2\mathrm{e}^- \rightarrow \mathrm{Cu}, so mass =E i tF=63×1.5×6002×96487≈0.294= \frac{E\,i\,t}{F} = \frac{63 \times 1.5 \times 600}{2 \times 96487} \approx 0.294 g, i.e. 0.2938 g. The other values arise from using the wrong n-factor or the wrong time.

Question 2 · NEET 2020

On electrolysis of dil. sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be
  1. A.Oxygen gas
  2. B.H2S gas
  3. C.SO2 gas
  4. D.Hydrogen gas
Answer and explanation

Answer: A

On electrolysis of dilute sulfuric acid with platinum electrodes, oxygen gas is evolved at the anode due to the oxidation of water. The reaction is 2H2O→O2+4H++4e−2\mathrm{H}_{2}\mathrm{O} → \mathrm{O}_{2} + 4\mathrm{H}^{+} + 4\mathrm{e}^{-}. Chapter: Electrochemistry.

How to practise Electrochemistry

Chapter by chapter, against real past-paper questions, on a screen: NEET is computer based from 2027. Read the chapter once, then attempt its PYQs until your accuracy stops climbing, and let the wrong answers tell you which lines to reread. If the chapter keeps refusing to stick, that has its own guide. There is also a free NEET mini mock with answers.

Nearby Chemistry chapters

Questions

How many questions did Electrochemistry have in NEET 2026?

Electrochemistry carried 4 questions in the NEET 2026 paper. Weightage shifts between cycles, so treat it as a probability, not a promise.

Where can I practise Electrochemistry PYQs for NEET?

Explore available chapter-wise NEET practice in BrainIt, free until the 2027 exam. Review explanations and track chapter accuracy to guide your revision. Sample questions from this chapter are on this page.

Is Electrochemistry important for NEET 2027?

It is part of the Chemistry syllabus the paper draws from, and NEET 2027 is computer based, so practise it on a screen. Your own accuracy in the chapter matters more than any weightage table: a heavy chapter you already score well on needs less time than a light one you keep missing.

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