What is used to find out the amount of residual chlorine in water?
AOzonation
BHorrock's apparatus test
CUltra violet irradiation test
DOrthotolidine test
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
A wall constructed to withstand the pressure of an earth filling is called
The removal of any liquid by a system constructed for the purpose is
For directly applying Simpson's rule for calculating volume of earthwork, the number of cross sections must be:
ഒരു വിദ്യാർത്ഥിയുടെ വ്യക്തിവിവരങ്ങൾ വിശദമായി രേഖപ്പെടുത്തിയ സുപ്രധാന സ്കൂൾ രേഖ
Accurate centering of a plane table, is done by