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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? [NCERT Exemplar Problems] (a) Lemon juice (b) Vinegar (c) Common salt (d) An antacid

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? [NCERT Exemplar Problems]
(a) Lemon juice
(b) Vinegar
(c) Common salt
(d) An antacid

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 8741 Points
25 days ago
Answer: d

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