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Which of the following substances decomposes when an electric current is passed through it?

Chemistry
WAEC 2001

Which of the following substances decomposes when an electric current is passed through it?

  • A. Glucose solution
  • B. Zinc rod
  • C. Hydrochloric acid
  • D. Tetrachloromethane
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Correct Answer: Option C
Explanation

Glucose does not decompose when an electric current passes through it because it is a non-electrolyte and does not conduct electricity. However, hydrochloric acid (HCl) does decompose when an electric current passes through it because it is a strong electrolyte.

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