MCQ
The geometry of [Ni(CN)4]2− is:
- ATetrahedral
- BSquare planar
- CTriangular
- DOctahedral
Explanation:
The geometry of [Ni(CN)4]2− is square planar as shown in the image.

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Product $(A)$ is
$STATEMENT-2$: The colour of the compound formed in the reaction of aniline with $\mathrm{NaNO}_2 / \mathrm{HCl}$ at $0^{\circ} \mathrm{C}$ followed by coupling with $\beta$-naphthol is due to the extended conjugation.