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प्र:

The food substances which get oxidised easily can be kept for longer duration by adding

  • 1
    oxygen and keeping them in sun for few days
  • 2
    nitrogen and keeping them in sun for few days
  • 3
    oxygen and keeping them in airtight containers
  • 4
    nitrogen and keeping them in airtight containers
  • उत्तर देखें
  • Workspace

उत्तर : 4. "nitrogen and keeping them in airtight containers"

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GK General Science Questions

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