MCQ
Maximum bond angle is present in
- A$BC{l_3}$
- B$BB{r_3}$
- C$B{F_3}$
- ✓Same for all
($s{p^2}$ hybridization) Hence bond angle is same for all of them (i.e., equal to $120^o$)
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| $LIST-I$ | $LIST-II$ |
| $(I)$ Aniline | $(P)$ Sodium fusion extract of the compound on boiling with $FeSO _4$, followed by acidification with conc. $H _2 SO _4$, gives Prussian blue color. |
| $(II)$ o-Cresol | $(Q)$ Sodium fusion extract of the compound on treatment with sodium nitroprusside gives blood red color. |
| $(III)$ Cysteine | $(R)$ Addition of the compound to a saturated solution of $NaHCO _3$ results in effervescence. |
| $(IV)$ Coprolactam | $(S)$ The compound reacts with bromine water to give a white precipitate. |
| $(T)$ Treating the compound with neutral $FeCl _3$ solution produces violet color. |
$(A)$ the reaction of $Al _2 O _3$ with coke ($C$) at a temperature $>2500^{\circ} C$.
$(B)$ the neutralization of aluminate solution by passing $CO _2$ gas to precipitate hydrated alumina $\left( Al _2 O _3 .3 H _2 O \right)$
$(C)$ the dissolution of $Al _2 O _3$ in hot aqueous $NaOH$.
$(D)$ the electrolysis of $Al _2 O _3$ mixed with $Na _3 AlF _6$ to give $Al$ and $CO _2$.
