Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2007ChemistryElectrochemistryActual

The efficiency of a fuel cell is given by:

Options

  1. AG S
  2. BG H
  3. CS G
  4. DH G

Correct answer

B. G H

Step-by-step solution

_ thermo = G _ rxn H _ rxn = useful E total E . Related Theory Fuel cells are more efficient than thermal plants. The efficiency of fuel cells to produce electricity is 70 % . Hydrogen-oxygen cell, methyl-oxygen-alcohol cell and propaneoxygen cell are some of the examples of fuel cells.

Practice Electrochemistry on Quantrex Academy →

More from Electrochemistry

Calculate the conductivity of 0.025 M BaCl ₂ solution if the molar conductivity of salt at 25^ C is 325 ⁻¹ cm ^2 mol ⁻¹ . 2026Calculate the equilibrium constant at 25 ^ C for the cell reaction, Ni(s) + Cu ²⁺(1 M ) Ni ²⁺(1 M ) + Cu(s) if E^ _ cell is 0.592 V . 2026Calculate the time required in second to deposit 5.85 g Ni from NiCl ₂ solution by passing 10 A current (molar mass of Ni = 58.5 g mol ⁻¹ ) 2026Which of the following cell reactions is exhibited by fuel cell? 2026Which of the following types of cells is used for electroplating? 2026Which of the following acts as a cathode in a dry cell? 2026What is the Standard cell potential of a cell constituted by two electrodes, A (E^0_ A ^+/ A = 0.30 V ) and B (E^0_ B ^+/ B = +0.42 V ) ? 2026How long (in minutes) must a 2 A current be passed through AgNO ₃ solution to deposit 5.4 g Ag ? [Molar mass of Ag = 108 g mol ⁻¹ ] 2026 Full Electrochemistry list All NEET PYQs