system

$(2$ Marks$)$

$"$B$.$ A measuring tube contains an oil of specific gravity $0\mathrm{.}9$ rising up to a depth of $120$cm

Determine the gauge pressure at this depth in KN$/$m$^2,$

$(4$ Marks$)$

C$.$ A vessel of cylindrical shape is $50$cm in diameter and $75$cm high. It contains $4$kg of a gas

The pressure measured with manometer indicates $620$mm of Hg above atmosphere when the barometer reads $760$mm of Hg$.$ Determine:

$(1)$ The absolute pressure of the gas in the vessel in bar

$(4$ Marks$)$

$(8)$The specific volume and density of the gas.

$(4$ Marks$)$