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NTSE Sample Question Chemistry When a burning splinter is brought near the gas jar containing hydrogen gas a poping sound is observed. It is due to (a)

exothermic (b) endothermic (c) exothermic & endothermic (d) None of these


Because hydrogen combine with water and form pop sound.
i think ans.is none of these
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It is an EXOTHERMIC REACTION  as when hydrogen gas  is brought near the burning splinter the reaction is below
2 H2(g)+O2 gives rise to 2 H2O(g)\+heat
as it produces heat it is an exothermic reaction
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