Electrochemistry

What is generated when electrons are transferred in redox reactions?

• A. Light

• B. Pressure

• C. Electric current

• D. Sound

Who formulated the laws of electrolysis?

• A. Humphrey Davy

• B. John Daniell

• C. Antoine Becquerel

• D. Michael Faraday

What conducts electricity in metallic conductors?

• A. Ions

• B. Electrons

• C. Anions

• D. Cations

Which of the following conducts electricity in solutions?

• A. Ions

• B. Electrons

• C. Photons

• D. Neutrons

According to Faraday’s first law, the mass of substance deposited during electrolysis is proportional to:

• A. Volume of electrolyte

• B. Temperature

• C. Quantity of electricity passed

• D. Pressure

Which of the following has the correct unit for conductivity?

• A. Ω

• B. Ω·m

• C. A·s

• D. Ω⁻¹·m⁻¹

What is the unit of molar conductivity?

• A. S

• B. S·cm²·mol⁻¹

• C. Ω⁻¹

• D. S·mol·cm⁻³

What is the relationship between conductance (G) and resistance (R)?

• A. G = R

• B. G = R²

• C. G = 1/R

• D. G = √R

Electric conductivity is the reciprocal of:

• A. Electric potential

• B. Electric current

• C. Electric resistance

• D. Electrical resistivity

The equation relating electric conductivity, electric field (E), and current density (J) is:

• A. κ = E / J

• B. κ = J / E

• C. κ = V / I

• D. κ = A / V