when hydrogen gas burns in the presence of oxygen water is formed and when water is electrolysed then hydrogen and oxygen are produced state the kind of reaction that takes place
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1.....when hydrogen gas burns in the presence of oxygen... water is formed
so in this reaction two substance combined together to form a single substance
....so it is a combination reaction
2....when water is electrolysed then oxygen and hydrogen are formed
....so in this reaction a single substance forms two substance then it is a decomposition reaction
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