A. cohesion
B. adhesion
C. viscosity
D. surface tension
E. elasticity
A. 30 minutes
B. 1 hour
C. 1 hour and 30 minutes
D. 2 hours
A. ratio of inertial force to force due to viscosity
B. ratio of inertial force to force due to gravitation
C. ratio of inertial force to force due to surface tension
D. all the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity
A. More than the self-cleansing velocity
B. Less than the self-cleansing velocity
C. Less than 10 m/sec
D. More than 20 m/sec
A. dynamic viscosity/density
B. dynamicviscosity x density
C. density/dynamic viscosity
D. 1/dynamicviscosity x density
E. same as dynamic viscosity
A. 2 hours
B. 3 hours
C. 4 hours
D. 5 hours
A. Sanitary sewage
B. Industrial waste
C. Storm sewage
D. None of these