A sample of soil is mixed with water and allowed to settle. The clear suspended 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. An antacid
C. Common salt
D. Vinegar
Answer:B
A sample of soil is mixed with water and allowed to settle. The clear suspended 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. An antacid C. Common salt D. Vinegar