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A closed manometer is filled with 3 fluids first on the left leg with density 8 kg/m^3 and length 10 cm, middle one with density 10 kg/m^3 and height difference 5 cm more on right leg and the third on the right leg with density 15 kg/m^3, what is the length of the third liquid?(a) 1 cm(b) 2 cm(c) 3 cm(d) 4 cmThis question was posed to me in a job interview.This key question is from Differential Pressure Measurements in section Temperature and Pressure of Basic Chemical Engineering

Answer»

The correct CHOICE is (B) 2 cm

The EXPLANATION: Pressure on both LEGS should be equal, => 8*10 = 10*5 + 15*x, => x = 2 cm.



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