AAmount of chlorine required for water treatment
BQuantity of chlorine residue seen in water after treatment
CA lab constant for adding chlorine in water
DDifference between added and residual chlorine present in water after treatment
Related Questions:
A Student focuses a sharp image of sun using a spherical mirror on a sheet of paper, which starts to burn after some time. Which of the following statement/statements about the mirror is/are correct?
a) It is concave spherical mirror
b) It is positive focal length
c)It is a converging mirror
