MCQ
The species having pyramidal shape is
- ✓$\mathrm{SO}_3$
- B$\mathrm{BrF}_3$
- C$\mathrm{SiO}_3^{2-}$
- D$\mathrm{OSF}_2$

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$\mathop {C{H_3} - \mathop C\limits^ \oplus H - C{H_3}}\limits_I $
$\mathop {C{H_3} - \mathop C\limits^ \oplus H - OC{H_3}}\limits_{II} $
$\mathop {C{H_3} - \mathop C\limits^ \oplus H - C{H_2} - OC{H_3}}\limits_{III} $
Internal energy $(U)$; Volume $(V)$; Heat $(q)$; Enthalpy $( H )$