question from ncert activity 8.5
1.what makes the balloon inflated when the boiling tube is placed in hot water explain why

Dear user,

Balloon gets inflated in hot water because the boiling water gives the water vapour or you can say gas to inflate it. But when balloon in flask is put in cold water then it start to deflate into the flask because there is low pressure inside the flask and high outside the flask. 

Regards

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the steam released from the hot water travels from boiling tube to the balloon . Thus, the balloon inflate .
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IT IS BCOZ AIR EXPANDS ON HEATING...
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IT EXPANDS ON HEATING 
  • -1
The water evaporates and turns into air. The air expands on heating and thus balloon inflates.
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