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Paragraph : 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)

Options

  1. AN
  2. BS
  3. CX
  4. DP

Correct answer

D. P

Step-by-step solution

Compound Y contains phosphorous as test 's' is confirming this, hence choice (D) is correct while (A), (B) and (C) are incorrect.

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