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A barometer has liquid-1 with density 5 Kg/m^3 and height 10 cm below the outside level above that there is liquid-2 of length 5 cm, if the gauge pressure of the gas is 1 Pa, what is the density of liquid-2?(a) 2 Kg/m^3(b) 4 Kg/m^3(c) 6 Kg/m^3(d) 8 Kg/m^3This question was addressed to me in an online interview.Asked question is from Differential Pressure Measurements topic in section Temperature and Pressure of Basic Chemical Engineering |
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Answer» RIGHT choice is (d) 8 Kg/m^3 The explanation is: Gauge pressure of gas + Pressure of liquid-2 = Pressure of liquid-1, => 1 + d*10*0.05 = 5*10*0.1, => d = 8 Kg/m^3. |
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