Dynamic viscosity of most of the liquids with rise in temperature :
A. increases
B. decreases
A. remains unaffected
D. unpredictable
Barometer is used to measure :
A. pressure in pipes, channels etc.
B. atmospheric pressure
C. very low pressure
D. difference of pressure
Pressure of the order of "10" torr can be measured by :
A. Bourdon tube
B. Pirani Gauge
C. micro-manometer
D. ionisation gauge
Surface energy per unit area of a surface is numerically equal to :
A. atmospheric pressure
B. surface tension
C. force of adhesion
D. force of cohesion
The difference of pressure between the inside and outside of a liquid drop is :
A.p = Txr
B.p = T/r
C. p = T/2r
D. p = 2T/r
E. none of the above
Surface energy per unit area of a surface is numerically equal to :
A. atmospheric pressure
B. surface tension
C. force of adhesion
D. force of cohesion
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately :
A. 30 mm
B. 5 mm
C. 10 mm
D. 20 mm
The difference of pressure between the inside and outside of a liquid drop is :
A.p = Txr
B.p = T/r
C. p = T/2r
D. p = 2T/r
The continuity equation is connected with :
A. viscous/unviscous fluids
B. compressibility of fluids
C. conservation of mass
D. steady/unsteady flow
