Question

A researcher does some experiments on wastewater from a factory. He put a drop of the wastewater on a litmus paper. The litmus paper turned red. He mixed a certain solution into the water sample and retested it with a litmus paper. This time the colour did not change. The solution was added to the wastewater before releasing it into a nearby water body. What is the importance of the solution in the process? *
1 point
(a) To increase the speed of water flow
(b) To identify the path of flowing water
(c) To change the colour of the wastewater
(d) To neutralize the acidity in the wastewater​

Answer 1

Answer:(d) To neutralize the acidity in the wastewater​

Explanation:

Answer 2

Answer:

(d) To neutralize the acidity in the wastewater​

Explanation: