969Civil EngineeringMedium
For the COD test of sewage, organic matter is oxidised by K2Cr2O7 in the presence of________?
AHNO3
BHCl
CNone of these
DH2SO4
Correct answer
D. H2SO4
Explanation
The correct answer is H2SO4.
Correct answer
D. H2SO4
Explanation
The correct answer is H2SO4.
The motion of air mass in a tornado is a________?
The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of________?
The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be________?
The maximum displacement of a particle executing S.H.M. corresponds to________?
A higher modular ratio shows________?
Barometer is used to measure________?