a when a compound attech with alkyl compound so the $pKb$ value is less so amine $NH_3$ have highest value of $Pkb$
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A $C_8H_{10}$ hydrocarbon is nitrated by $HNO_3$ and sulphuric acid. Two, and only two, $C_8H_9NO_2$ isomers are obtained, Which of the following fits this evidence ?
Number of compounds from the following which cannot undergo Friedel-Crafts reactions is ............ toluene, nitrobenzene, xylene, cumene, anline, chlorobenzene, $m$-nitroaniline, $m$-dinitrobenzene
$9.3 \mathrm{~g}$ of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product ' $\mathrm{P}$ '. The mass of product ' $\mathrm{P}$ ' obtained is $26.4 \mathrm{~g}$. The percentage yield is ......... $%$.
An organic compound '$A$' contains nitrogen and chlorine. It dissolves readily in water to give a solution that turns litmus red. Titration of compound '$A$' with standard base indicates that the molecular weight of ' $A$ ' is $131\,\pm\,2$. When a sample of '$A$' is treated with aq. $NaOH$, a liquid separates which contains $N$ but not $Cl$. Treatment of the obtained liquid with nitrous acid followed by phenol gives orange precipitate. The compound '$A$' is.