MCQ
Highest fluoride and highest oxide of $Mn$ are respectively
- A$MnF_7, Mn_2O_7$
- B$MnF_6, MnO_3$
- ✓$MnF_4, Mn_2O_7$
- D$MnF_7, MnO_2$
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The observed pattern of electrophilic substitution can be explained by
$(A)$ the steric effect of the halogen
$(B)$ the steric effect of the tert-butyl group
$(C)$ the electronic effect of the phenolic group
$(D)$ the electronic effect of the tert-butyl group
At $300 \,K$, ozone is fifty percent dissociated. The standard free energy change at this temperature and $1\, atm$ pressure is $(-)$ $........\,J\, mol ^{-1}$ (Nearest integer)
[Given: $\ln 1.35=0.3$ and $R =8.3 J K ^{-1} mol ^{-1}$ ]