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2014-07-12T14:19:03+05:30

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Water when it become ice it is hard and cold when it becomes vapour it is hard to hold but it is always present in air
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wow
i would watch some science experiment videos .
wow thats cool
i think u r a junior scientist
But dry ice is not hard
2014-07-12T17:38:25+05:30
Ans will be water 
hope this will help u plz mark as best
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