We have observed a balloon seller filling a large number of balloons from a single cylinder. Which gas does he have in the cylinder?????
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he have helium gas in the cylinder
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We have observed a balloon seller's balloon always floats up. So he needs to tie it to his cycle. This happens because of the presence of a lighter gas inside the balloons. Hydrogen is a very light gas which can float. So it is present in the cylinder of the balloon seller. So even the amount of gas is less, it will float.
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