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Lassaigne’s test is used in qualitative analysis to detect

1. (a) Nitrogen
2. (b) Sulphur
3. (c) Chlorine
4. (d) All of these

Correct answer: (d) All of these

Solution

Lassaigne's test is a qualitative analysis method used to detect the presence of nitrogen, sulfur, and halogens (like chlorine) in organic compounds, so the correct answer is 'All of these.'

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