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Indian Navy INET Electrochemistry — practice questions

Explore 29 free Electrochemistry questions in Indian Navy INET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Electrochemistry questions and exercises with answers

Showing questions 1–29 of 29.

For ΔG° < 0 (spontaneous), E° must be:Read the answer and worked solution →Equilibrium constant K of the Daniell cell at 25°C (E° = 1.10 V, n = 2):Read the answer and worked solution →Conductance is the:Read the answer and worked solution →The byproduct of a hydrogen-oxygen fuel cell (used in space + electric cars) is:Read the answer and worked solution →Galvanic cell or electrolytic cell?Read the answer and worked solution →Complete the standard cell potential relationRead the answer and worked solution →Order these electrodes by standard potential, lowest firstRead the answer and worked solution →Match each electrode to the potential your syllabus givesRead the answer and worked solution →True or false: conductivity on dilutionRead the answer and worked solution →Strong electrolyte or weak electrolyte?Read the answer and worked solution →Kohlrausch's lawRead the answer and worked solution →Match each relation to what it linksRead the answer and worked solution →True or false: cells and electrodesRead the answer and worked solution →Tap every statement true of a galvanic cellRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Complete the thermodynamic linksRead the answer and worked solution →What the Nernst equation is forRead the answer and worked solution →Which quantity is being described?Read the answer and worked solution →True or false: batteries, fuel cells and corrosionRead the answer and worked solution →Order the steps: find a standard cell potentialRead the answer and worked solution →Flip and pair: symbol with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Tap every factor conductivity depends onRead the answer and worked solution →Assertion and reason: potentialsRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →Complete the dilution behaviourRead the answer and worked solution →True or false: the standard scaleRead the answer and worked solution →

Worked practice questions

For ΔG° < 0 (spontaneous), E° must be:

  1. Positive
  2. Variable
  3. Zero
  4. Negative
Show answer and solution

Correct answer: A. Positive

ΔG° = -nFE°. For ΔG° < 0 (spontaneous), we need -nFE° < 0, so E° > 0. Positive cell potential indicates spontaneous galvanic cell.

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Equilibrium constant K of the Daniell cell at 25°C (E° = 1.10 V, n = 2):

  1. ≈ 10²⁰
  2. ≈ 10⁻²
  3. ≈ 10³⁷
  4. ≈ 10²
Show answer and solution

Correct answer: C. ≈ 10³⁷

**At equilibrium:** log K = nE°/0.0591 = 2 × 1.10/0.0591 ≈ 37.2. So K ≈ 10³⁷, very large. The forward reaction goes essentially to completion.

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Conductance is the:

  1. Same as resistance
  2. Voltage
  3. Reciprocal of resistance: G = 1/R (siemens)
  4. Current
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Correct answer: C. Reciprocal of resistance: G = 1/R (siemens)

G = 1/R, measured in siemens (S = ohm⁻¹). For ionic solutions, this characterizes ease of charge flow. Specific conductance κ = G × (l/A).

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More Chemistry topics

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