JEE Main 2025 Chemistry question

In Dumas' method for estimation of nitrogen 0.4 g of an organic compound gave 60 mL of nitrogen collected at 300 K temperature and 715 mm Hg pressure. The percentage composition of nitrogen in the compound is (Given : Aqueous tension at 300 K = 15 mm Hg)

• (1)7.85%
• (2)20.95%
• (3)17.46%
• (4)15.71%Correct