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ChemistryJEE Main 24 Jan 2026, Shift 1·Q24·Numerical·Easy–moderate

Purification & Characterisation · Dumas method nitrogen estimation

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 percentage of nitrogen in the organic compound is %

(Aqueous tension at 300 K is 15 mm).

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