Practical Organic Chemistry and PurificationhardMCQ SINGLE

Given below are two statements: Statement I: In ‘Lassaigne’s Test’, when both nitrogen and sulphur aPractical Organic Chemistry and Purification Chemistry Question

Question

Given below are two statements: Statement I: In ‘Lassaigne’s Test’, when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed. Statement II: If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give NaCN and Na S. In the light of the above statements, choose the most appropriate answer from the options given below: 2 – 2 2 (A) Both Statement I and Statement II are correct (B) Both Statement I and Statement II are incorrect (C) Statement I is correct but Statement II is incorrect (D) Statement I is incorrect but Statement II is correct

💡 Solution & Explanation

Na + C + N + S NaSCN If Na is taken in excess, it destroy SCN and form Na S and NaCN. NaSCN + 2Na Na S + NaCN

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