Answer the following by true or false and correct the false statement.

$1.$ The temperature of concrete can be determined in both the plastic and the hardened stage.

$2.$ In both the standard and the modified proctor tests, while introducing the aggregates into the molds, the same number of layers is maintained.

$3.$ The temperature of concrete can only be determined in the hardened stage.

$4.$ The proctor test objective is to identify the nature of aggregates.

$5.$ While conducting the slump test, if the vibrator is used the slump cone is filled by $2$ insertions.

$6.$ The ready mix concrete coming from far places $($more than $50$ km$)$ is not still feasible for construction cause of formation of clots...

$7.$ For testing purposes, HMA samples must be done at $150$ degrees centigrade for fresh specimens under standard conditions.