NEET Chemistry: Electrochemistry — MCQ Test 19

Q6. In electrolysis of molten MgCl\(_2\), 0.24 g of Mg (atomic mass 24 g/mol) is deposited. What volume of Cl\(_2\) gas (STP) is produced at the anode? (F = 96500 C/mol)

Q7. What is the equilibrium constant for a cell reaction with \( E^\circ_{cell} = 0.354 \, V \) at 298 K involving 2 electrons?

Q8. How many electrons are involved in the reduction of 1 mole of \( IO_3^- \) to \( I_2 \) in acidic medium?

Q9. The limiting molar conductivity of BaCl\(_2\) is 280 S cm\(^2\) mol\(^{-1}\). If \( \lambda^\circ_{Ba^{2+}} = 127 \, S \, cm^2 \, mol^{-1} \), what is \( \lambda^\circ_{Cl^-} \)?

Q10. What is the time (in seconds) required to deposit 1.175 g of sodium from molten NaCl using a current of 2 A? (Atomic mass of Na = 23.5 g/mol, F = 96500 C/mol)

NEET Chemistry — Electrochemistry

Free MCQ Test 19 of 20

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The resistance of a conductivity cell with 0.02 M KCl solution is 400 Ω, and its conductivity is 0.0025 S cm\(^{-1}\). What is the cell constant?

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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 Resistance, Conductivity, Solution, Constant, Reducing, and Discharge.

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. The resistance of a conductivity cell with 0.02 M KCl solution is 400 Ω, and its conductivity is 0.0025 S cm\(^{-1}\). What is the cell constant?

  • A. 0.25 cm\(^{-1}\)
  • B. 2.5 cm\(^{-1}\)
  • C. 1.0 cm\(^{-1}\)
  • D. 0.5 cm\(^{-1}\)

Q2. In a dry cell, what is the reducing agent during discharge?

  • A. Zn
  • B. MnO\(_2\)
  • C. NH\(_4\)Cl
  • D. MnO(OH)

Q3. A weak electrolyte has \( \Lambda_m^\circ = 390 \, S \, cm^2 \, mol^{-1} \) and a degree of dissociation of 0.02 at 0.1 M. What is the conductivity of the solution?

  • A. 0.0078 S cm\(^{-1}\)
  • B. 0.00078 S cm\(^{-1}\)
  • C. 0.039 S cm\(^{-1}\)
  • D. 0.00039 S cm\(^{-1}\)

Q4. What is the standard Gibbs energy change for a cell with \( E^\circ_{cell} = 1.05 \, V \) and 2 electrons transferred? (F = 96500 C/mol)

  • A. -101.325 kJ/mol
  • B. -202.65 kJ/mol
  • C. -96.5 kJ/mol
  • D. -405.3 kJ/mol

Q5. In the electrolysis of molten NaCl, what is the product at the cathode?

  • A. Cl\(_2\)
  • B. H\(_2\)
  • C. Na
  • D. O\(_2\)

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