0 0 votes Match the following $$\begin{array}{|cl|cl|}\hline &\text{Heat treatment process} && \text{Effect}\\ \hline P:& \text{Tempering} & 1.&\text{Strengthening} \\ \hline Q:& \text{Quenching} & 2.&\text{Toughening} \\ \hline R:& \text{Annealing} & 3.&\text{Hardening} \\ \hline S:& \text{Normalizing} & 4.&\text{Softening} \\ \hline \end{array}$$ $P-2,\:Q-3,\:R-4\:,S-1$ $P-1,\:Q-1,\:R-3\:,S-2$ $P-3,\:Q-3,\:R-1\:,S-3$ $P-4,\:Q-3,\:R-2\:,S-1$ Heat Transfer gateme-2020-set1 fluid-mechanics-and-thermal-science heat-transfer + – ♦go_editor 308 views answer comment Share Follow Add Sync Questions 0 reply Please log in or register to add a comment.