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Sometimes i am hard and cold. sometimes i am difficult to hold. but i am always present in air. who i am ?

what was that?
Sometime I'm hard and cold not always



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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
2 3 2
i would watch some science experiment videos .
wow thats cool
i think u r a junior scientist
But dry ice is not hard
Ans will be water 
hope this will help u plz mark as best
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