Chemistry · 2026
JEE Main · 24 January 2026, Shift 1 · Q72
In Dumas method for estimation of nitrogen, 0.50 g of an organic compound gave 70 mL of nitrogen collected at 300 K and 715 mm pressure. The…
In Dumas method for estimation of nitrogen, $\displaystyle 0.50$ g of an organic compound gave $\displaystyle 70$ mL of nitrogen collected at $\displaystyle 300$ K and $\displaystyle 715$ mm pressure. The percentage of nitrogen in the organic compound is $\displaystyle \_\_\_\_$ %.
(Aqueous tension at $\displaystyle 300$ K is $\displaystyle 15$ mm ).
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From NTA’s final answer key for this paper.
15
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.