The following compounds are identical with respect to:

Which of the following statements is incorrect?

The absolute configurations of the two chiral centers in the following molecule are:

The correct statement$(s)$ concerning the structures $E, F$ and $G$ is (are):
$E$: $CH_3CH_2CH(CH_3)COCH_3$
$F$: $CH_3CH_2C(OH)=C(CH_3)_2$ (enol form)
$G$: $CH_3CH_2C(CH_3)=C(OH)CH_3$ (enol form)
$(A)$ $E, F$ and $G$ are resonance structures
$(B)$ $E, F$ and $E, G$ are tautomers
$(C)$ $F$ and $G$ are geometrical isomers
$(D)$ $F$ and $G$ are diastereomers

Which of the following is an incorrect relation between the given pairs?

The correct energy profile for amine inversion and the hybridization of nitrogen in the transition state is: