JEE Chemistry - MCQ Practice Questions

Which of the following is NOT an application of electrochemistry?

The Faraday constant (F) is numerically equal to:

In the electrochemical series, which metal is most easily oxidized?

The molar conductivity of a solution increases with dilution because:

For the cell reaction: Zn + Cu²⁺ → Zn²⁺ + Cu, if E°(Zn²⁺/Zn) = -0.76 V and E°(Cu²⁺/Cu) = +0.34 V, the standard cell potential is:

When 3 Faradays of charge are passed through a solution of Cu²⁺, how many moles of Cu are deposited?

The relationship between standard Gibbs free energy change (ΔG°) and equilibrium constant (K) at 25°C is best represented by:

In the electroplating of an object with silver, which electrode should be made of silver?

The specific conductance of a solution is 0.02 S/cm and the cell constant is 1.2 cm⁻¹. The molar conductance of 0.1 M solution is:

Which of the following factors does NOT affect the rate of electrodeposition?

For a galvanic cell at 25°C, E°cell = +0.50 V and n = 2. The value of ΔG° is approximately:

The Nernst equation at 25°C for a cell reaction with n electrons transferred is given by: E = E° - (0.059/n) log Q. What does Q represent?

In the electrolysis of CuSO₄ solution with copper electrodes, what happens at the cathode?

Two cells with the same emf but different internal resistances are connected. Which cell will deliver more current in an external circuit?

A galvanic cell has E°cell = +1.2 V at 25°C with n = 2. At what concentration ratio [Zn²⁺]/[Ag⁺] will the cell potential equal zero?

In electrochemistry, overpotential is important because:

If a current of 10 A is passed through a solution for 30 minutes, the total charge passed (in Faradays) is approximately:

According to the latest JEE chemistry pattern (2024-25), the conductivity of a strong electrolyte solution depends primarily on:

In a galvanic cell, if the standard cell potential E°cell is negative, which statement is true?

Which electrodes combination gives the maximum EMF in a galvanic cell at 25°C?