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Indian Navy SSR (Sailor) Electrochemical Series — practice questions

Explore 28 free Electrochemical Series questions in Indian Navy SSR (Sailor) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Electrochemical Series questions and exercises with answers

Showing questions 1–28 of 28.

In a galvanic cell, electrons flow externally from:Read the answer and worked solution →Kohlrausch's law states the limiting molar conductivity of an electrolyte is:Read the answer and worked solution →Equilibrium constant for cell with E° = 0.118 V, n = 2, at 25°C:Read the answer and worked solution →Standard reduction potential ranking. Which is the strongest oxidizing agent?Read the answer and worked solution →Match each scientist to their contributionRead the answer and worked solution →Ionic or covalent?Read the answer and worked solution →Complete the driver of bond formationRead the answer and worked solution →Single, double and triple bondsRead the answer and worked solution →True or false: Lewis structuresRead the answer and worked solution →Complete the definition of resonanceRead the answer and worked solution →Tap every bond parameter the chapter namesRead the answer and worked solution →True or false: ionic solidsRead 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 →Bonded pair or lone pair?Read the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Order the reasoning: why resonance is neededRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →True or false: what bond parameters affectRead the answer and worked solution →Bond parameters in useRead the answer and worked solution →Which parameter answers this?Read the answer and worked solution →True or false: resonanceRead the answer and worked solution →Order the steps: draw a Lewis structureRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Assertion and reason: structureRead the answer and worked solution →Flip and pair: parameter with what it measuresRead the answer and worked solution →

Worked practice questions

In a galvanic cell, electrons flow externally from:

  1. Both directions equally
  2. Cathode to anode
  3. Anode to cathode
  4. Either depending on circuit
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Correct answer: C. Anode to cathode

**In external circuit:** electrons flow from anode (oxidation, source of electrons) to cathode (reduction, sink). Conventional current is opposite (cathode to anode externally).

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Kohlrausch's law states the limiting molar conductivity of an electrolyte is:

  1. Always equal
  2. Sum of individual ionic limiting conductivities
  3. Product of conductivities
  4. Variable with concentration
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Correct answer: B. Sum of individual ionic limiting conductivities

**Kohlrausch's law:** Λ_m^0(electrolyte) = ν+ λ+^0 + ν- λ-^0, where ν+ and ν- are cation and anion stoichiometries. Λ_m^0(HCl) = λ_H+^0 + λ_Cl-^0.

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Equilibrium constant for cell with E° = 0.118 V, n = 2, at 25°C:

  1. 10
  2. 10⁴ = 10000 (log K = 2 × 0.118 / 0.0591 ≈ 4)
  3. 10² = 100
  4. 1
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Correct answer: B. 10⁴ = 10000 (log K = 2 × 0.118 / 0.0591 ≈ 4)

log K = nE°/0.0591 = 2 × 0.118/0.0591 ≈ 3.99 ≈ 4. K ≈ 10⁴.

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