MCQ
Some reactions of amines are given. Which one is not correct ?
- ✓

- B$CH_3CH_2NH_2 + HNO_2 \rightarrow CH_3CH_2OH + N_2$
- C$CH_3NH_2 + C_6H_5SO_2Cl \rightarrow CH_3NHSO_2C_6H_5$
- D$(CH_3)_2NH + NaNO_2 + HCl \rightarrow (CH_3)_2N-N=O$



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$Cu ( s )+ Sn ^{2+}( aq ) \rightarrow Cu ^{2+}( aq )+ Sn ( s )$
$\left( E _{ Sn ^{2+} \mid Sn }^{0}=-0.16\, V , E _{ Cu ^{2+} \mid Cu }^{0}=0.34\, V \right.$ Take $F=96500\, C\, mol ^{-1}$ )
$(A)$ $\left[ Ni \left( H _{2} O \right)_{2}( en )_{2}\right]^{2+}$
$(B)$ $\left[ Ni \left( H _{2} O \right)_{4}(\text { en })\right]^{2+}$ and
$(C)$ $\left[ Ni ( en )_{3}\right]^{2+}$ is ...... .

$R =8.3\, J \, K ^{-1}\, mol ^{-1}$