Hydraulics and Fluid Mechanics in ME
Choose the wrong statement. Alcohol is used in manometer, because

It provides longer length for a given pressure difference
Its density is less
Its vapour pressure is low
It provides suitable meniscus for the inclined tube

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Hydraulics and Fluid Mechanics in ME
In open channels, the specific energy is the

Total energy per unit discharge
Total energy measured above the horizontal datum
Kinetic energy plotted above the free surface of water
Total energy measured with respect to the datum passing through the bottom of the channel

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