A manometer containing a liquid X is used to measure the pressure of a gas supply. Figure 4.1 shows the manometer. The atmospheric pressure is $9.9\times10^{4}\,\text{Pa}$.
(a(i))[2]
Calculate the pressure produced by a 0.36 m column of liquid X.
(a(ii))[1]
Calculate the gas supply pressure.
(b(i))[2]
Describe the change in the liquid levels when liquid X is replaced by the same volume of a liquid with a higher density.
(b(ii))[2]
Describe the change in the liquid levels when a manometer tube with a slightly smaller cross-sectional area, containing an identical volume of liquid X, is used.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “p = ρgh, or equivalently 0.36 \times 840 \times 10” …