
\begin{tabular}{|c|c|c|}
\hline \multirow[t]{6}{*}{ Q. 55} & \multicolumn{2}{|c|}{ Match the hardness test (in Column I) with its indenter type (in Column II). } \\
\hline & Column I & Column II \\
\hline & (P) Brinell & 1. Diamond pyramidal \\
\hline & (Q) Rockwell & 2. Diamond cone \\
\hline & (R) Vickers & 3. Tungsten carbide sphere \\
\hline & & 4. Steel sphere \\
\hline
- & P-2, Q-4, R-1 & \\
\hline - & P-4, Q-2, R-3 & \\
\hline - & P-3, Q-4, R-2 & \\
\hline - & P-4, Q-2, R-1 & \\
\hline
\end{tabular}