NEET UG CHEMISTRY MCQ: HYDROGEN

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The lightest gas is:

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Correct option: D

Hydrogen

Option D (Hydrogen) is correct because hydrogen has the lowest atomic mass among the given options, making it the lightest gas.

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\mathrm{CaC}_2+\mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{Ca}(\mathrm{OH})_2+' \mathrm{X}\,'

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