Test Q: A compound `'X'` was fused with `Na` metal and the extract gave a white precipitate
Channel: Doubtnut
Date: 2020-04-12

Test Q: A compound `'X'` was fused with `Na` metal and the extract gave a white precipitate with `AgNO_(3)`. The Lassaigne's extract gave a red colouration with  neturl `FeCl_(3)`. Test -R while compound `'Y'` when fused with `Na` methal and subsequent analysis on its Lasaigne's extract did not give any characteristic test. Test -S while compund `Y` on fusion with fusion mixture (sodium carbonate `+` potassium nitrate) `Na_(2)O_(2),` followed by extraction, followed by addition of conc. `HNO_(3)` and ammonium molybdate give a yelow precipitate.    The formula of yellow precipitate is