🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs301
Surface energy per unit area of a surface is numerically equal to ___________________?
Aatmospheric pressure
Bsurface tension
Cforce of adhesion
Dforce of cohesion E. viscosity
302
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the______________?
Aforce of adhesion
Bforce of cohesion
Cforce of friction
Dforce of diffusion E. none of die above
303
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately_______________?
A1 mm
B5 mm
C10 mm
D20 mm E. 30 mm
304
The difference of pressure between the inside and outside of a liquid drop is_____________?
Ap = Txr
Bp = T/r
Cp = T/2r
Dp = 2T/r E. none of the above
305
The vapour pressure over the concave surface is__________________?
Aless man the vapour pressure over the plane surface
Bequal to the vapour pressure over the plane surface
Cgreater than the vapour pressure over the plane surface
Dzero E. none of the above
306
The process of diffusion of one liquid into the other through a semi-permeable membrane is called _______________?
Aviscosity
Bosmosis
Csurface tension
Dcohesion E. diffusivity
307
Falling drops of water become spheres due to the property of ________________?
Aadhesion
Bcohesion
Csurface tension
Dviscosity E. compressibility
308
Free surface of a liquid tends to contract to the smallest possible area due to force of _________________?
Asurface tension
Bviscosity
Cfriction
Dcohesion E. adhesion
309
Specific weight of sea water is more that of pure water because it contains ________________?
Adissolved air
Bdissolved salt
Csuspended matter
Dall of the above E. heavy water
310
Alcohol is used in manometers because_____________________?
Ait has low vapour pressure
Bit is clearly visible
Cit has low surface tension
Dit can provide longer column due to low density E. is provides suitable meniscus