MCQ
If an iron rod is dipped in $CuS{O_4}$ solution
- ABlue colour of the solution turns green
- ✓Brown layer is deposited on iron rod
- CNo change occurs in the colour of the solution
- DBlue colour of the solution vanishes
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(image) $+ NaNO_2+HCl \rightarrow $ product
$\left[ K _{ f } \text { of water }=1.86 \ K \ kg \ mol ^{-1}\right]$
$C{H_3}C{H_2}I + KO{H_{(aq)}} \to C{H_3}C{H_2}OH + KI$
is classified as :