MCQ
Polysubstitution is a major drawback in
- ✓Friedel Craft’s alkylation
- BReimer Tiemann reaction
- CAcetylation of aniline
- DFriedel Craft’s acylation
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From above data what is the molecular mass of $CH_4$ containing all isotopes of carbon but hydrogen on ${}_1^1 H$ ................ $\mathrm{u}$ (Given that atomic mass of hydrogen $= 1.008$)