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\usepackage[version=4,layout=stacked]{mhchem}
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\begin{document}



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\element{general}{
\begin{question}{QuestionChemicalBondingStageA- 37 }
In nitrogen family, the \ce{H-X-H} bond angle in the hydrides gradually becomes closer to \ang{90} on going from \ce{N} to \ce{Sb}. This shows that gradually
\begin{choicescustom}
\begin{tasks}[label={}](2)
\task* \correctchoice{ The crystal lattice of ice is mostly formed by covalent as well as hydrogen bonds}
\task* \correctchoice{ The density of water increases when heated from  \SI{0}{\celsius} to \SI{4}{\celsius}  due to the change in the structure of the cluster of water molecules}
\task* \correctchoice{ Above  \SI{4}{\celsius}  the thermal agitation of water molecules increases. Therefore, intermolecular  distance increase and water starts expanding}
\task* \correctchoice{ The density of water increases from  \SI{0}{\celsius}  to a maximum at \SI{4}{\celsius}   because the entropy  (disorder) of the system increases}
\end{tasks}
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\end{question}
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