MCQ
Water treatment plants should be installed in all $ ........ $ areas .
- ADesert.
- BResidential.
- ✓Industrial.
- DNone of the above.
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$A.$ has completely filled $\pi$ antibonding molecular orbitals
$B.$ is diamagnetic
$C.$ has bond order one
$D.$ is isoelectronic with Neon