Which of the following material is used for negative pole of a dry cell? 

This question was previously asked in
RRB ALP Instrument Mechanic 23 Jan 2019 Official Paper (Shift 1)
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  1. silicon
  2. Aluminium
  3. Zinc
  4. Lead

Answer (Detailed Solution Below)

Option 3 : Zinc
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Detailed Solution

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  • Zinc is commonly used as the material for the negative pole (anode) in a dry cell.
  • In a standard dry cell, zinc serves as the anode (negative electrode), and manganese dioxide is typically used as the cathode (positive electrode).
  • The electrolyte is usually a paste containing ammonium chloride or zinc chloride.
  • The outer casing is typically made of zinc, and the center rod is often made of carbon.
  • The use of Zinc as the negative pole contributes to the cell's overall electrochemical performance.

Here, option 3 is correct.

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