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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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The correct Answer is:
D
An antacid
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ZEN PUBLICATION-ACIDS, BASES, AND SALTS-ZEN ADDITOINAL QUESTIONS SECTIONS (MULTIPLE CHOICE QUESTIONS)
  1. Sodium carbonate is a basic salt because it is a salt of

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  2. Calcium phosphate is present in tooth enamel. Its nature is

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  3. A sample of soil is mixed with water and allowed to settle. The clear ...

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  4. Which of the following gives the correct increasing order of acidic st...

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  5. If a few drops of a concentrated acid accidentally spills over the han...

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  6. One of the constituents of baking powder is sodium hydrogencarbonate, ...

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  7. To protect tooth decay we are advised to brush our teeth regularly. Th...

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  8. The pH of the gastric juices released during digestion is

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  9. Which one of the following can be used as acid-base indicator by a vis...

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  10. Which of the following substance will not give carbon dioxide on treat...

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  11. Which of the following is acidic in nature ?

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  12. Which of the following is used for dissolution of gold ?

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  13. Which of the following is not a mineral acid ?

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  14. Which among the following is not a base ?

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  15. Which of the following statements is not correct ?

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  16. Equal volumes of hydrochloric acid and sodium hydroxide solutions of s...

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  17. Which of the following statements is true for acids ?

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  18. Which of the following are present in dilute aqueous solution of hydro...

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  19. Identify the correct represents of reaction occurring during chloralka...

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  20. As the pH value of a neutral solution increases

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