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EEJ MAIN Chemistry QUESTION #1002
Question 1
Statement (I): Nitrogen, sulphur, halogen and phosphorus present in an organic compound are detected by Lassaigne's Test. Statement (II): The elements present in the compound are converted from covalent form into ionic form by fusing the compound with Magnesium in Lassaigne's test.
  • Statement I is false but Statement II is true
  • Both Statement I and Statement II are true
  • Both Statement I and Statement II are false
  • Statement I is true but Statement II is false✔️
Correct Answer Explanation
Statement I is correct — N, S, halogens, and P are detected by Lassaigne's test. Statement II is false — the compound is fused with sodium (Na), not magnesium (Mg), to convert covalent bonds into ionic form (e.g., \(\text{NaCN, Na}_2\text{S, NaX}\)).