{"@context":"https://schema.org/","@type":"Quiz","dateCreated":"2025-05-04T15:10:06.418Z","dateModified":"2025-11-26T09:01:41.627Z","typicalAgeRange":"11-18","educationalLevel":"NEET (UG)","assesses":"Chemistry - Organic Chemistry","educationalAlignment":[{"@type":"AlignmentObject","alignmentType":"educationalTopic","targetName":"Organic Chemistry"},{"@type":"AlignmentObject","alignmentType":"educationalSubject","targetName":"Chemistry"},{"@type":"AlignmentObject","alignmentType":"educationalExam","targetName":"NEET (UG)"}],"name":"Quiz about Organic Chemistry","about":{"@type":"Thing","name":"Chemistry - Organic Chemistry"},"hasPart":[{"@type":"Question","eduQuestionType":"Multiple choice","learningResourceType":"Practice problem","educationalLevel":"intermediate","name":"Question About Organic Chemistry","text":"Which one of the following reactions does NOT belong to “Lassaigne's test”?}","encodingFormat":"text/markdown","comment":{"@type":"Comment","text":"Lassaigne’s test involves converting N, S, and halogens into ionic compounds using sodium for easy detection. Redox reactions like CuO + C are not included."},"suggestedAnswer":[{"@type":"Answer","position":0,"encodingFormat":"text/markdown","text":"

$2Na + S$ \$\\xrightarrow{\\Delta}\$ $Na_2S$

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$Na + X$ \$\\xrightarrow{\\Delta}\$ $NaX$

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$2CuO + C$ \$\\xrightarrow{\\Delta}\$ $2Cu + CO_2$

","comment":{"@type":"Comment","text":"\"\""}},{"@type":"Answer","position":3,"encodingFormat":"text/markdown","text":"

$Na + C + N$ \$\\xrightarrow{\\Delta}\$ $NaCN$

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$2CuO + C$ \$\\xrightarrow{\\Delta}\$ $2Cu + CO_2$

","comment":{"@type":"Comment","text":"Lassaigne’s test involves converting N, S, and halogens into ionic compounds using sodium for easy detection. Redox reactions like CuO + C are not included."},"answerExplanation":{"@type":"comment","text":""}}}]}

Which one of the following reactions does NOT belong to “Lassaigne's test”?

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