MCQ
The isomeric alcohol which has a chiral carbon atom is
- A$n$ -butyl alcohol
- B$iso$ -butyl alcohol
- ✓$sec$-butyl alcohol
- D$tert$ -butyl alcohol

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$A.$ For 1 s orbital, the probability density is maximum at the nucleus.
$B.$ For $2 s$ orbital, the probability density first increases to maximum and then decreases sharply to zero.
$C.$ Boundary surface diagrams of the orbitals encloses a region of $100 \%$ probability of finding the electron.
$D.$ $p$ and d-orbitals have $1$ and $2$ angular nodes respectively.
$E.$ Probability density of p-orbital is zero at the nucleus.