MCQ
The incorrect statement is :-
- A$\pi^* p$ have two nodal planes
- ✓Bond order of $HeH^+$ is $0.5$
- CIn $NCO^-, C$ is sp hybridised
- D$O_3$ is polar while $O_2$ is non polar
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$1$. propanal
$2$. trichloroethanal
$3$. methanal
$4$. ethanal
$5$. benzaldehyde