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Organic Chemistry

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Multiple Choice

Urotropine can be obtained by which of the following reactions?

  1. Reaction between formaldehyde and ammonia
  2. Reaction between phenol and formaldehyde
  3. Reaction between vinyl acetylene and hydrochloric acid
  4. Reaction between benzaldehyde and triphenylphosphine alkylindenes
  5. Reaction between acetylene and chlorine