Practice question
Question
A compound with C₅H₁₀O gives no precipitate with AgNO₃ in Lassaigne’s test and has a degree of unsaturation of 1. What functional group is present?
Explanation
No halogen (negative Lassaigne’s test). Degree of unsaturation = 1. CH₃CH₂COCH₂CH₃ (ketone) fits C₅H₁₀O.
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