MCQ
Oxidation state of nitrogen is not an integer in:
- AHydroxyl amine (NH2OH)
- BAmmonia (NH3)
- CHydrazine (N2H4)
- DHydrazoic acid (N3H)
Explanation:
In N3H, the oxidation state of N is$-\frac{1}{3}$. Hence, it is not an integer.
The oxidation state of N in NH2OH, NH3 and N2H4 are −1,−3 and −2 respectively.
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Statement $I :$ In 'Lassaigne's Test, when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed.
Statement $II :$ If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give $NaCN$ and $Na _{2} S$.
In the light of the above statements, choose the most appropriate answer from the options given below...
$\mathrm{E}_{\mathrm{n}}=$ Total energy, $\mathrm{K}_{\mathrm{n}}=$ Kinetic energy, $\mathrm{V}_{\mathrm{n}}=$ Potential energy , $\mathrm{r}_{\mathrm{n}}=$ Radius of $\mathrm{n}^{\text {th }}$ orbit
Match the following:
| Column $I$ | Column $II$ |
| $(A)$ $\mathrm{V}_{\mathrm{n}} / \mathrm{K}_{\mathrm{n}}=$ ? | $(P)$ $0$ |
| $(B)$ If radius of $n^{\text {th }}$ orbit $\propto E_n^x, x=$ ? | $(Q)$ $-1$ |
| $(C)$ Angular momentum in lowest orbital | $(R)$ $-2$ |
| $(D)$ $\frac{1}{\mathrm{r}^{\mathrm{n}}} \propto \mathrm{Z}^{\mathrm{y}}, \mathrm{y}=$ ? | $(S)$ $1$ |