1.  is used for routing floods through reservoirs

3.  is a hydrologic method of routing floods through streams

4.  is one is which only energy equation is used

1.  Motion of submarine at large depths

2.  Motion of ship in deep seas

3.  Cruising of a misssile in air

1.  Half the top width is equal to one of the side slope

2.  Half the top width plus the bottom width is equal to both the side slopes put together

4.  Hydraulic mean depth is equal to half the top width

1.  specific weight of water, thickness of the aquifer, compressibility of the aquifer and that of water

2.  permeability, thickness and compressibility of aquifer and compressibility of water

4.  transmissibility of aquifer and specific yield of aquifer

1.  Capillary potential and permeability

3.  Velocity in channels and vapour pressure

4.  Velocity in pipes and pressure head

2.  sedimentation

3.  activated sludge process

4.  chlorination

1.  it is a function of the rate of addition of oxygen to the stream

2.  it is a function of the rate of depletion of oxygen from the stream

4.  the rate of addition is linear but the rate of depletion is non-linear

1.  velocity gradient and the volume of mixing basin

2.  viscosity and velocity gradient

3.  viscosity, velocity gradient and the volume of the mixing basin

2.  Activated carbon granules of size 0.1 to 2 mm

3.  Ordinary wood shavings of fine size

4.  Coal-tar

2.  Chlorine

3.  Ozone

4.  UV-radiation