AP EAMCET202018 Sep 2020Evening ShiftChemistryElectrochemistryActual
Match the entries from Column I and Column II and choose the correct order.
Options
- A( array lll A & B & C 3 & 2 & 1 array )
- B( array lll A & B & C 1 & 2 & 3 array )
- C( array lll A & B & C 3 & 1 & 2 array )
- D( array lll A & B & C 2 & 1 & 3 array )
Correct answer
C. ( array lll A & B & C 3 & 1 & 2 array )
Step-by-step solution
The correct matching between Column I and Column II is (A) Leclanche cell-anode reaction : ( Zn Zn ²⁺+2 e⁻ ) Cathode : ( MnO ₂+ NH ₄⁺+e⁻ MnO ( OH )+ NH ₃ ) (B) Fuel cell : (2 H ₂+ O ₂ H ₂ O + ) Energy (gets converted into electrical energy). (C) Ni-Cd cell : Rechargeable (secondary) cell. Hence, option (c) is correct.