iran-konkur 2021 Q224

iran-konkur · Other · konkur-riazi_1400_specialized Not Maths
224 – Regarding the hypothetical molecule with the structure below, which statement is correct?
[Figure: A molecule containing a benzene ring with an $\mathrm{HN}$ group and a side chain containing $\mathrm{N}$, $\mathrm{C=O}$, $\mathrm{OH}$, and $\mathrm{OH}$ groups]
  1. The number of carbon atoms in it is $4.5$ times the number of oxygen atoms.
  2. It has a functional group of hydroxyl and a repeating unit that forms a polyamide.
  3. The number of single bonds between atoms in it is $5.4$ times the number of double bonds between them.
  4. The number of hydrogen atoms is $1.25$ times the number of lone pairs of electrons on the atoms in it.
\textbf{224 –} Regarding the hypothetical molecule with the structure below, which statement is correct?

\textit{[Figure: A molecule containing a benzene ring with an $\mathrm{HN}$ group and a side chain containing $\mathrm{N}$, $\mathrm{C=O}$, $\mathrm{OH}$, and $\mathrm{OH}$ groups]}

\begin{enumerate}
    \item The number of carbon atoms in it is $4.5$ times the number of oxygen atoms.
    \item It has a functional group of hydroxyl and a repeating unit that forms a polyamide.
    \item The number of single bonds between atoms in it is $5.4$ times the number of double bonds between them.
    \item The number of hydrogen atoms is $1.25$ times the number of lone pairs of electrons on the atoms in it.
\end{enumerate}