Q$1.$

$($i$)$ Consider a dual$-$fluid manometer connected to an air conduit, as illustrated in Figure Q$1($i$).$ Given that one fluid has a specific gravity of $13\mathrm{.}55,$ the task is to ascertain the specific gravity of the second fluid, considering the specified absolute air pressure. Assume the atmospheric pressure to be $100$ kPa $.$

$[15$ Marks$]$

$($ii$)$ A pressure of gas pipeline is reported as negative $8$ inch water gauge. What is the meaning of the water gauge? Calculate this pressure in kPa $.$

$[10$ marks$]$