Question

Which of the following gas is used for artificial ripening of green fruits?
1. Carbon Dioxide
2. Ethane
3. Hydrogen
4. Acetylene (ethylene)

Answer 1

Correct Answer - Option 4 : Acetylene (ethylene)

The correct answer is Acetylene (ethylene).

• Acetylene (ethylene) is used for artificial ripening of green fruits.
• The life of a fruit can be divided into three phases: fruit set, fruit development, and fruit ripening.
• Fruit ripening is an irreversible phenomenon involving a series of biochemical, physiological, and organoleptic changes.
• Acetylene gas liberated from calcium carbide accelerates the ripening process.
• Carbon Dioxide
  • It is a chemical compound composed of one carbon and two oxygen atoms.
  • It is present in the Earth's atmosphere at a low concentration and acts as a greenhouse gas.
  • In its solid state, it is called dry ice.
• Ethane
  • It is a colorless and odorless gas.
  • It is mainly used to produce ethylene, a feedstock to make plastics.
  • It is also used to produce ethylene, which is then used by the petrochemical industry to produce a range of intermediate products.
• Hydrogen
  • It is the lightest element in the periodic table.
  • It is the most abundant chemical substance in the universe.
  • It is used to make ammonia for fertilizers, refining metals, and methanol for making artificial material like plastics.
  • It is also used as a rocket fuel where liquid hydrogen is combined with liquid oxygen to produce a powerful explosion.
• Acetylene (ethylene)
  • It is a hydrocarbon and the simplest alkyne.
  • It is the only fuel gas that can be used for welding.
  • It is also ideal for brazing, cutting, flame gouging, spot heating, hardening, texturing, cleaning, and thermal spraying many materials.