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Which of the following processes is not a surface phenomenon?

Which of the following processes is not a surface phenomenon?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Condensation
  • B Evaporation
  • C Photo Emission
  • D Thermionic Emission
Correct Answer: Option A
Explanation:

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