NEET Chemistry: Electrochemistry — MCQ Test 10

Q6. A conductivity cell with cell constant 0.4 cm\(^{-1}\) shows a resistance of 250 Ω with a 0.02 M NaCl solution. What is the molar conductivity?

Q7. In electrolysis of molten CaCl\(_2\), 0.4 g of Ca (atomic mass 40 g/mol) is deposited. What volume of Cl\(_2\) gas (STP) is produced at the anode? (F = 96500 C/mol)

Q8. How many Faradays are required to deposit 0.295 g of cobalt from CoCl\(_2\) solution? (Atomic mass of Co = 59 g/mol)

Q9. In a mercury cell, what acts as the cathode during discharge?

Q10. A cell \( Ni(s) | Ni^{2+}(0.001 \, M) || Cl_2(g)(2 \, atm) | Cl^-(0.1 \, M) | Pt(s) \) operates at 298 K. What is the cell potential? (Given: \( E^\circ_{Ni^{2+}/Ni} = -0.25 \, V \), \( E^\circ_{Cl_2/Cl^-} = 1.36 \, V \))

NEET Chemistry — Electrochemistry

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The conductivity of a 0.005 M KBr solution is 0.00072 S cm\(^{-1}\). What is the molar conductivity?

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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 Conductivity, Solution, Standard, Electrons, Transferred, and Involved.

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 conductivity of a 0.005 M KBr solution is 0.00072 S cm\(^{-1}\). What is the molar conductivity?

  • A. 72 S cm\(^2\) mol\(^{-1}\)
  • B. 144 S cm\(^2\) mol\(^{-1}\)
  • C. 288 S cm\(^2\) mol\(^{-1}\)
  • D. 36 S cm\(^2\) mol\(^{-1}\)

Q2. What is the standard Gibbs energy change for a cell with \( E^\circ_{cell} = 0.77 \, V \) and 2 electrons transferred? (F = 96500 C/mol)

  • A. -74.305 kJ/mol
  • B. -148.61 kJ/mol
  • C. -96.5 kJ/mol
  • D. -297.22 kJ/mol

Q3. How many electrons are involved in the reduction of 1 mole of \( Cr_2O_7^{2-} \) to \( Cr^{3+} \) in acidic medium?

  • A. 3
  • B. 4
  • C. 6
  • D. 2

Q4. How many Faradays are required to deposit 5.85 g of sodium from NaNO\(_3\) solution? (Atomic mass of Na = 23 g/mol)

  • A. 1 F
  • B. 0.5 F
  • C. 0.2543 F
  • D. 2 F

Q5. What is the potential of a hydrogen electrode in a solution with \( [H^+] = 10^{-3} \, M \) at 298 K? (Given: \( E^\circ_{H^+/H_2} = 0.00 \, V \))

  • A. 0.00 V
  • B. -0.059 V
  • C. -0.177 V
  • D. -0.295 V

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