Amines & Nitrogen Compounds · JEE Main previous year questions

2016 2 questions

1. Q722016 · 3 Apr 2016 · Shift 1

   Which one of the following complexes shows optical isomerism? (en = ethylenediamine)

   1. A.$\mathrm{cis}[\mathrm{Co}(\mathrm{en}{)}_2\mathrm{C}{\mathrm{l}}_2]\mathrm{Cl}$
   2. B.$\mathrm{trans}[\mathrm{Co}(\mathrm{en}{)}_2\mathrm{C}{\mathrm{l}}_2]\mathrm{Cl}$
   3. C.$[\mathrm{Co}(\mathrm{N}{\mathrm{H}}_3{)}_4\mathrm{C}{\mathrm{l}}_2]\mathrm{Cl}$
   4. D.$[\mathrm{Co}(\mathrm{N}{\mathrm{H}}_3{)}_3\mathrm{C}{\mathrm{l}}_3]$
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   Answer: A

2. Q752016 · 3 Apr 2016 · Shift 1

   In the Hofmann bromamide degradation reaction, the number of moles of $\mathrm{NaOH}$ and $\mathrm{B}{\mathrm{r}}_2$ used per mole of amine produced are:

   1. A.Four moles of $\mathrm{NaOH}$ and two moles of $\mathrm{B}{\mathrm{r}}_2$.
   2. B.Two moles of $\mathrm{NaOH}$ and two moles of $\mathrm{B}{\mathrm{r}}_2$
   3. C.Four moles of $\mathrm{NaOH}$ and one mole of $\mathrm{B}{\mathrm{r}}_2$
   4. D.One mole of $\mathrm{NaOH}$ and one mole of $\mathrm{B}{\mathrm{r}}_2$
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   Answer: C