Answers

2015-06-02T15:35:36+05:30
(b)carbon is the answer.......carbon is non-metal and it can dissolve in water

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2015-06-02T15:39:21+05:30
I think that is Calcium. Because when calcium reacts with Oxygen it gives Calcium Oxide. i.e Calcium + Oxygen = Calcium Oxide. And Calcium Oxide can be melted and is also dissolved in Water.
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