Which among the following methods is used to separate the constituents present in a compound?

  1. A. Electrochemical method
  2. B. Heating method
  3. C. Fractional distillation
  4. D. Decomposition followed by ion exchange

Correct Answer: A. Electrochemical method

Explanation

Chemical compounds (like water, H_2O) cannot be separated into their constituent elements by physical means; they require chemical methods such as electrochemical separation (electrolysis).

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