The stress-strain curves for brass,steel,and rubber are shown in the figure. The lines $A, B,$ and $C$ correspond to:

The figure shows the stress-strain curve for a given material. What are $(a)$ Young's modulus and $(b)$ approximate yield strength for this material?

What are elastomers? Plot the stress $\to$ strain curve for them and explain.

The diagram shows a force-extension graph for a rubber band. Consider the following statements:
$I.$ It will be easier to compress this rubber than expand it.
$II.$ Rubber does not return to its original length after it is stretched.
$III.$ The rubber band will get heated if it is stretched and released.
Which of these can be deduced from the graph?

The figure shows the graph between stress and strain for a uniform wire at two different temperatures. Then:

In Column-$I$ there are two stress-strain graphs,and in Column-$II$ the nature of the materials is given. Match them appropriately:

Column-$I$	Column-$II$
$(a)$ Graph $A$	$(i)$ $A$ is ductile
$(b)$ Graph $B$	$(ii)$ $A$ is brittle
	$(iii)$ $B$ is ductile
	$(iv)$ $B$ is brittle