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Question

21. Weather observation balloons are filled with……


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Solution

Weather observation balloons are filled with hydrogen.

  • Hydrogen is commonly used to fill weather observation balloons since it is less expensive, however, helium can also be utilised.
  • It is used in meteorological balloons to analyse weather conditions since it is less thick than air.
  • This causes it to float and aids in lifting the balloon into the air.

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