MCQ
The incorrect statement among the following is
- ✓$C_ {60}$ is an allotropic form of carbon
- B$O_3$ is an allotropic form of oxygen
- C$S_8$ is the only allotropic form of sulphur
- DRed phosphorus is more stable in air than white phosphorus
No. of $\pi-$ bonds $=4$
(b)
No. of $\pi-$ bonds $=4$
Total $\pi-$ bonds $=8$
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Item$-I$ Item$-II$
$(I)$ Benzene $( P )$ $HCl$ and $SnCl _{2}, H _{3} O ^{+}$
$(II)$ Benzonitrile $(Q)$ $H _{2}, Pd - BaSO _{4}, S$ and quinoline
$(III)$ Benzoyl Chloride $(R)$ $CO , HCl$ and $AlCl _{3}$
$[Figure]$ $\xrightarrow[{S_N2}]{{KOH}}$
Reason : There is delocalisation of electrons from filled $d$ orbitals into the empty orbitals on the $CO$ ligands.
