1. Tardigrade
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  3. Chemistry
  4. Certain percentage of H 2 O 2 is marked as 100 volume hydrogen peroxide, it means that one millilitre of that per cent will give 100 V of oxygen at STP. The per cent is

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Q. Certain percentage of $H _{2} O _{2}$ is marked as "$100\, volume$" hydrogen peroxide, it means that one millilitre of that per cent will give $100\, V$ of oxygen at STP. The per cent is

Hydrogen

Solution:

Correct answer is (d) $30 \%$