MCQ
Which of these do not contain $ - COOH$ group
- AAspirin
- BBenzoic acid
- ✓Picric acid
- DSalicylic acid

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$CH _{2} = C = C H - C H _{3}$
$\quad 1\quad \quad 2\quad \quad 3\quad \quad \quad 4$
molecule, the hybridization of carbon $1,2,3$ and $4$ respectively are :