Question

A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish- blue?
(a) Lemon juice
(b) Vinegar
(c) Common salt
(d) An antacid​

Answer 1

Answer:

The clear supernatant solution turns the pH papwer yellowish-orange. Which of the following would change the colour of this pH paper to greenish-blue ? Solution : The colour of the pH paper signifies that the solution is somewhat acidic.