MCQ
The correct $IUPAC$ name for


- A$5-$ methyl $-4-$ ( $1'-2'-$ demethylpropyl) heptane
- B$3-$ methyl $-4-$ ( $1',2'-$ dimethylpropyl) heptane
- ✓$2,3,5-$ trimethyl $-4-$ propylheptane
- D$4-$ propyl $-2,3,5-$ trimethylpeptane


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| Condition | Temperature |
| $(1)$ Spontaneous | $(p)$ $273\,K$ |
| $(2)$ At equilibrium | $(q)$ $260\, K$ |
| $(3)$ Non-spontaneous | $(r)$ $280\, K$ |
| $ClO_4^{-}$ | $IO_4^{-}$ | $BrO_4^{-}$ |
| $E^{\circ}=1.19 V$ | $E^{\circ}=1.65 V$ | $E^{\circ}=1.74 V$ |
The correct order of their oxidising power is:

$A.$ 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.

Given : $K _{ a }\left( CH _{3} CH _{2} COOH \right)=1.3 \times 10^{-5}$