- AMetamerism
- BFunctional isomerism
- CPositional isomerism
- ✓All types
Functional isomers: $\mathop {C{H_3}C{H_2}C{H_2} - C{H_2} - OH}\limits_{{\text{Butanol}}} $ and $\mathop {{C_2}{H_5} - O - {C_2}{H_5}}\limits_{{\text{Diethyl}}\,{\text{ether}}} $
Metamers: $C{H_3}C{H_2}C{H_2}COOH\,({C_4}{H_8}{O_2})$ and $\mathop {C{H_3} - O - {C_3}{H_7}}\limits_{{\text{Methyl propyl ether}}} $
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The frequency of the wave is $\mathrm{x} \times 10^{19} \mathrm{~Hz}$. $x=$ . . . . (nearest integer)


| List $I$ (Amines) | List $II$ $\left( pK _{ b }\right)$ |
| $A$ Aniline | $I$ $3.25$ |
| $B$ Ethanamine | $II$ $3.00$ |
| $C$ $N-$Ethylethanamine | $III$ $9.38$ |
| $D$ $N, N-$Diethylethanamine | $IV$ $3.29$ |
Choose the correct answer from the options given below :-
$Cl_2 + 2Br^ - (aq.) \to 2Cl^-(aq.) + Br_2$
$Br_2$ gas thus formed is dissolved into solution of $Na_2CO_3$ and then pure $Br_2$ is obtained by treatment of the solution with