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Which of the following gases can be collected by the method of downward delivery?

Which of the following gases can be collected by the method of downward delivery?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Chlorine
  • B Oxygen
  • C Ammonia
  • D Hydrogen
Correct Answer: Option A
Explanation:

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