Correct answer
D. residual chlorine
Explanation
The correct answer is residual chlorine.
The refractive index of the ocean water________?
Pick up the correct statement from the following?
What is defined as the reduction of the value of certain natural resources such as mines, oil, timber, quarries, etc. due to the gradual extraction of its contents?
For design of sewers, percentage of sewage discharge is assumed________?
The C.G. of a solid hemisphere lies on the central radius 3r________?
Which one of the following residual biases involves the GPS accuracy?