NEET Chemistry: Electrochemistry — MCQ Test 18

Q6. The limiting molar conductivity of KBr is 151.8 S cm\(^2\) mol\(^{-1}\). If \( \lambda^\circ_{K^+} = 73.5 \, S \, cm^2 \, mol^{-1} \), what is \( \lambda^\circ_{Br^-} \)?

Q7. The resistance of a conductivity cell with 0.01 M NaCl solution is 250 Ω, and its conductivity is 0.0012 S cm\(^{-1}\). What is the cell constant?

Q8. What is the emf of the cell \( Cd(s) | Cd^{2+}(0.01 \, M) || Ni^{2+}(0.1 \, M) | Ni(s) \) at 298 K? (Given: \( E^\circ_{Cd^{2+}/Cd} = -0.40 \, V \), \( E^\circ_{Ni^{2+}/Ni} = -0.25 \, V \))

Q9. A lead storage battery is discharged with 2 A for 5 hours. What is the mass of PbO\(_2\) (molar mass 239 g/mol) consumed at the cathode? (F = 96500 C/mol)

Q10. In a lead storage battery, what is the anode material?

NEET Chemistry — Electrochemistry

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What is the equilibrium constant for a cell reaction with \( E^\circ_{cell} = 0.236 \, V \) at 298 K involving 2 electrons?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Chemistry preparation, focusing specifically on the chapter Electrochemistry. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Equilibrium, Constant, Reaction, Involving, Electrons, and Conductivity.

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Preview of Questions in this Test

Q1. What is the equilibrium constant for a cell reaction with \( E^\circ_{cell} = 0.236 \, V \) at 298 K involving 2 electrons?

  • A. 10\(^4\)
  • B. 10\(^6\)
  • C. 10\(^7\)
  • D. 10\(^8\)

Q2. The conductivity of a 0.025 M solution is 0.00325 S cm\(^{-1}\). What is its molar conductivity?

  • A. 65 S cm\(^2\) mol\(^{-1}\)
  • B. 130 S cm\(^2\) mol\(^{-1}\)
  • C. 260 S cm\(^2\) mol\(^{-1}\)
  • D. 32.5 S cm\(^2\) mol\(^{-1}\)

Q3. What is the standard cell potential for a galvanic cell where iron is oxidized and silver ions are reduced? (Given: \( E^\circ_{Fe^{2+}/Fe} = -0.44 \, V \), \( E^\circ_{Ag^+/Ag} = 0.80 \, V \))

  • A. 1.24 V
  • B. 0.36 V
  • C. 1.64 V
  • D. -1.24 V

Q4. During electrolysis of aqueous Na\(_2\)SO\(_4\) with inert electrodes, 0.224 L of gas (STP) is collected at the cathode. How many coulombs were passed? (F = 96500 C/mol)

  • A. 965 C
  • B. 2895 C
  • C. 1930 C
  • D. 4825 C

Q5. The conductivity of a 0.008 M solution is 0.00104 S cm\(^{-1}\). What is its molar conductivity?

  • A. 65 S cm\(^2\) mol\(^{-1}\)
  • B. 130 S cm\(^2\) mol\(^{-1}\)
  • C. 260 S cm\(^2\) mol\(^{-1}\)
  • D. 104 S cm\(^2\) mol\(^{-1}\)

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