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

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( $\rho_{ Ni }$ (density of Nickel) is $10 \,gmL ^{-1}$, Molar mass of Nickel is $60\,gmol ^{-1} F =96500\,C\,mol ^{-1}$ )
