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A sample of soil is mixed with water and...

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

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Only a basic solution will change the colour of pH paper to greenish-blue
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U-LIKE SERIES-ACIDS, BASES AND SALTS-MULTIPLE CHOICE QUESTIONS (ONE MARK EACH)
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