\begin{tabular}{|c|c|c|c|c|}
\hline \multirow[t]{3}{*}{ Q. 114} & \multicolumn{4}{|c|}{\begin{tabular}{l}
A high molecular weight polymer passes through different zones from the hopper \\
to the die in an extruder. Among the options given, identify the correct match \\
between the zones and their key functions.
\end{tabular}} \\
\hline & \multicolumn{2}{|c|}{ Zones } & \multicolumn{2}{|c|}{ Key functions } \\
\hline & P & Metering zone & 1 & \begin{tabular}{l}
High shear forces for effective \\
mixing
\end{tabular} \\
\hline & Q & Compression zone & 2 & Receives the charge or feed \\
\hline & R & Feed zone & 3 & \begin{tabular}{l}
Melts the charge or feed through \\
heat conducted by the heating \\
element
\end{tabular} \\
\hline & S & Working zone & 4 & \begin{tabular}{l}
The charge or feed acquires a \\
constant flow rate imparted by the \\
helical flight of the screw
\end{tabular} \\
\hline
- & P-4; & $-3 ; R-2 ; S-1$ & & \\
\hline - & P-3; & $-4 ; \mathrm{R}-1 ; \mathrm{S}-2$ & & \\
\hline - & P-4; & $-1 ; \mathrm{R}-2 ; \mathrm{S}-3$ & & \\
\hline - & P-3; & ; R-2; S-4 & & \\
\hline
\end{tabular}
