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Hydrogen is a combustible gas and oxygen...

Hydrogen is a combustible gas and oxygen is a supporter of combustion. Water contains both hydrogen and oxygen but it is used to existinguish fire. Explain.

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Hydrogen and oxygen are elements and have their characteristic properties. But water is a compound of hydrogen and oxygen combined together in a fixed ratio of 1:8 by mass. The properties of a compound are entirely different from those of its constituent atoms from which it is formed. Therefore, water has different properties than hydrogen and oxygen.
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MTG IIT JEE FOUNDATION-IS MATTER AROUND US PURE ?-SOLVED EXAMPLES
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  11. A solution contains 50 mL of alcohol mixed with 150 mL of water....

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  13. How can a saturated solution by made unsaturated ?

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  15. Hydrogen is a combustible gas and oxygen is a supporter of combustion....

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  16. Name the following: An element which is liquid at room temperature ...

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  17. Name the following: An element attracted by magnet.

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  18. Name the following: A non-metal which is gaseous at room temperatur...

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  19. Name the following: Two gases present in air.

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