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 red colouration with neutral FeCl_(3). Test R while compound 'Y' when fused with Na metal and subsequent analysis on its Lassaigne's extract did not give any characteristic test. Test S while compound Y on fusion with fusion mixture (sodium carbonate+potassium nitrate) or Na_(2)O_(2), followed by extraction, followed by addition of conc. HNO_(3) and ammonium molybdate gave a yellow precipitate Q. Compound X

Test (Q). A compound 'X' was fused with Na metal and the extract gave

1.	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 red colouration with neutral FeCl_(3). Test R while compound 'Y' when fused with Na metal and subsequent analysis on its Lassaigne's extract did not give any characteristic test. Test S while compound Y on fusion with fusion mixture (sodium carbonate+potassium nitrate) or Na_(2)O_(2), followed by extraction, followed by addition of conc. HNO_(3) and ammonium molybdate gave a yellow precipitate Q. Compound X
Answer» will CONTAIN halogens may contain halogens may contain only sulphur will contain nitrogen Answer :B