Ye balloon saans khichne se fulta h
The bottle has two straw in which one is connected with a balloon. Blowing air in straw having balloon inflates the ballon while sucking air out from another straw inflates the balloon because sucking air lowers the pressure inside the bottle around the balloon due to which relatively balloon has higher pressure and this inflates the balloon. #shorts #ytshorts #science #physics #education @CONCEPTUALGURUJI