Statement-1: In ${\mathrm{CH}}_3\mathrm{NCO}\text{, }$ the bond angles $\mathrm{C}-\mathrm{N}-\mathrm{C}$ and $\text{ N-C-O }$ are not identical

Statement-2: N-atom has a lone pair of electron which is involved in $p\pi =d\pi .$ delocalisation whereas C-atom does not have lone pair of electrons.

In ${\mathrm{CH}}_3\mathrm{NCO}$ the bond angles $\mathrm{C}-\mathrm{N}-\mathrm{C}$ and $\text{ N-C-O }$ are not identical.

Statement 1. It is accurate since no p-orbital is left for sidewise overlapping because all three p-orbitals  are involved in the  ${\mathrm{sp}}^3$ hybridization.

Statement 2: Through pn-dr overlapping, Xe produces three double bonds in ${\mathrm{XeO}}_3\text{, }$which is ${\mathrm{sp}}^2$ hybridised.