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.
| Item $-I$ (Mixture) | Item $-II$ (Separation method) |
| $(a)$ $H_2O :$ Sugar | $p.$ Sublimation |
| $(b)$ $H_2O :$ Aniline | $q.$ Recrystallization |
| $(c)$ $H_2O :$ Toluene | $r.$ Stem distillation |
| $s.$ Differential extraction |

$(A)$ Ice floats in water.
$(B)$ Higher Lewis basicity of primary amines than tertiary amines in aqueous solutions.
$(C)$ Formic acid is more acidic than acetic acid.
$(D)$ Dimerisation of acetic acid in benzene.


(Round off to the Nearest Integer) [Given : $R =8.314 \,J mol ^{-1} K ^{-1}$. Assume,
hydrogen is an ideal gas] [Atomic mass off $Fe$ is $55.85\, u$ ]