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Q15 (CDS-I/2015) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Applied everyday chemistry Answer Verified

Electricity is produced through dry cell from

Result
Your answer: —  Â·  Correct: A
Explanation

A dry cell is a type of electrochemical cell that produces electricity by converting stored chemical energy into electrical energy [3]. Within the cell, spontaneous chemical reactions (redox reactions) occur between the electrodes and the electrolyte. Specifically, the chemical action generates a potential difference between the terminals, which sets electrons in motion to create an electric current when connected to a circuit [2]. In a dry cell, the electrolyte is a thick moist paste rather than a liquid, making it portable and convenient for devices like flashlights and clocks [3]. Unlike thermal, mechanical, or nuclear energy sources, the dry cell relies entirely on the expenditure of its internal chemical components to maintain current flow [2]. Once the chemical reactants are exhausted, the single-use dry cell can no longer produce electricity [3].

Sources

  1. [1] Science , class X (NCERT 2025 ed.) > Chapter 11: Electricity > 11.7 HEA 11.7 HEA11.7 HEATING EFFECT OF ELECTRIC CURRENT > p. 188
  2. [3] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 4: Electricity: Magnetic and Heating Effects > A step further > p. 57
  3. [2] Science , class X (NCERT 2025 ed.) > Chapter 11: Electricity > 11.2 ELECTRIC POTENTIAL AND POTENTIAL DIFFERENCE > p. 173
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