Q.The active materials of nickel-iron battery are

  • ANickel hydroxide
  • BPowered iron and its oxide
  • C21 % solution of KOH
  • DAll of the above
Correct Answer : (D)

All of the above

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The active materials of nickel-iron battery are Nickel hydroxide, Powered iron and its oxide and 21 % solution of KOH.

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