1. Ethane
  2. Oxygen
  3. Ammonia
  4. Acetylene
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Option 4 : Acetylene

  • Acetylene is used for the ripening of fruits.
  • The effect of acetylene gas upon fruit is a resulting change in texture (softening), colour and other processes. 
  • ​Acetylene acts like ethylene and accelerates the ripening process.
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