
- A

- B

- ✓

- D







Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| List $-I$ (Atomic Number) | List $-II$ (Block of periodic table) |
| $A$ $37$ | $I$ $p-$block |
| $B$ $78$ | $II$ $d-$block |
| $C$ $52$ | $III$ $f-$block |
| $D$ $65$ | $IV$ $s-$block |
નીચે આપેલા વિકલ્પોમાંથી યોગ્ય ઉત્તરની પસંદગી કરો.
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($1$) The product $S$ is
(image)
($2$) The reactions, $Q$ to $R$ and $R$ to $S$, are
$[A]$ Dehydration and Friedel-Crafts acylation
$[B]$ Aromatic sulfonation and Friedel-Crafts acylation
$[C]$ Friedel-Crafts alkylation, dehydration and Friedel-Crafts acylation
$[D]$ Friedel-Crafts alkylation and Friedel-Crafts acylation
Given the answer quetion ($1$) and ($2$)
$(A)$ Ethane-$1\ 2$-diamine is a chelating ligand.
$(B)$ Metallic aluminium is produced by elecrtrolysis of aluminium oxide in presence of cryolite.
$(C)$ Cyanide ion is used as ligand for leaching of silver.
$(D)$ Phosphine act as a ligand in Wilkinson catalyst.
$(E)$ The stability constants of $\mathrm{Ca}^{2+}$ and $\mathrm{Mg}^{2+}$ are similar with $EDTA$ complexes.
Choose the correct answer from the options given below: