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Get Answers to all your Questions
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
Answers (1)
Answer: (d)
As pH paper turns greenish blue for weakly basic compound and antacids contain weak base like . So, an antacid would change the colour of this pH paper to greenish-blue.
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