question_answer

Alex performs an experiment in laboratory. He takes a glass U tube, fixes it vertically on a stand, keeping the level of both the arms of the tub same He then pours coloured water into the tube to make it half full. He also attaches a polyethylene tube at the end of the U tube and thistle the funnel as shown in the picture below. Which one of the following model did Alex made?

A) Thermometer

B) Manometre

C) Hydrometre

D) Balance

E) None of these