A student dipped a strip of pH paper in distilled water taken in a tube. As expected, the pH paper acquired green colour. He then dissolved a pinch of common salt in the same tube. What will be the expected change in colour of the pH paper ?

Explanation

Distilled water is netural with pH close to 7. An aquesous solution of common salt is also netural. This means tht there will be no change in the pH. The colour of pH paper will remain the same i.e., light green.