A material has the stress$-$strain behavior shown in figure below.

$($a$)$ What is the material strength at rupture?

$($b$)$ What is the toughness of this material?

$($c$)$ What is the modulus of resilience? $q,$

$($d$)$ What is the modulus of elasticity of this material?$($b$)$ Does the density of an aggregate mix depend on the size distribution of the aggregate?

Yes or no$.q,$ no

$($c$)$ An aggregate mix has maximum size of aggregate $=19mm.$ If aggregate distribution is required to achieve maximum density, what will be the required percent passing a sieve of size $4\mathrm{.}75$ mm $.q,60\%x$

$($d$)$ If cement is exposed to humidity during storage, a flash set might occur. True or False. true

$($e$)$ For both air entrained concrete and non$-$air entrained concrete, increasing water$-$cement ratio decreases the compressive strength of concrete. True or False. $q,$ false $x10$ points

$3.$ A sieve analysis test was performed on a sample of aggregate and produced the results shown in the table below.