NEET Chemistry: Electrochemistry — MCQ Test 2

Q6. A lead storage battery delivers 1 A for 4825 s. What is the mass of PbSO\(_4\) (molar mass 303 g/mol) formed at the cathode? (F = 96500 C/mol)

Q7. A cell reaction has \( \Delta_r G^\circ = -212300 \, J/mol \) and involves 2 electrons at 298 K. What is the equilibrium constant?

Q8. During electrolysis of aqueous NaI with inert electrodes, 0.224 L of H\(_2\) (STP) is produced at the cathode. How many coulombs were passed? (F = 96500 C/mol)

Q9. A hydrogen electrode operates at 298 K with \( P_{H_2} = 0.1 \, atm \) and pH = 4. What is its potential? (Given: \( E^\circ_{H^+/H_2} = 0.00 \, V \))

Q10. The resistance of a conductivity cell with 0.001 M KCl solution is 1500 Ω, and its conductivity is 0.146 × 10\(^{-3}\) S cm\(^{-1}\). What is the cell constant?

NEET Chemistry — Electrochemistry

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In a lead storage battery, what is the electrolyte?

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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 Electrolyte, Dissociation, Constant, Electrons, Involved, and Reduction.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. In a lead storage battery, what is the electrolyte?

  • A. PbSO\(_4\)
  • B. H\(_2\)O
  • C. PbO\(_2\)
  • D. H\(_2\)SO\(_4\)

Q2. A weak acid has \( \Lambda_m^\circ = 350 \, S \, cm^2 \, mol^{-1} \) and \( \Lambda_m = 17.5 \, S \, cm^2 \, mol^{-1} \) at 0.05 M. What is the dissociation constant \( K_a \)?

  • A. 1.25 \times 10^{-3}
  • B. 2.5 \times 10^{-4}
  • C. 5.0 \times 10^{-5}
  • D. 1.316 \times 10^{-4}

Q3. How many electrons are involved in the reduction of 1 mole of \( MnO_4^- \) to \( MnO_2 \) in basic medium?

  • A. 5
  • B. 3
  • C. 2
  • D. 4

Q4. A lead storage battery delivers 1.5 A for 10 hours during discharge. How many grams of PbSO\(_4\) (molar mass 303 g/mol) are formed at the anode? (F = 96500 C/mol)

  • A. 42.39 g
  • B. 169.56 g
  • C. 30.3 g
  • D. 84.78 g

Q5. What is the emf of the cell \( Mn(s) | Mn^{2+}(0.05 \, M) || H^+(0.005 \, M) | H_2(g)(1 \, bar) | Pt(s) \) at 298 K? (Given: \( E^\circ_{Mn^{2+}/Mn} = -1.18 \, V \), \( E^\circ_{H^+/H_2} = 0.00 \, V \))

  • A. 1.18 V
  • B. 1.25375 V
  • C. 1.10625 V
  • D. 1.05 V

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