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    Chemistry
    Grade-9
    Easy

    Question

    What is calcium hydroxide used for? 

    1. To increase the pH of acidic soil.
    2. To remove impurities from water.
    3. To oxidize gunpowder.
    4. To fertilize soil.

    Hint:

    Calcium hydroxide are basic in nature.

    The correct answer is: To increase the pH of acidic soil.

      • Oxides of alkaline earth metals are basic oxides.
      • Basic oxides pH ranges above 7.
      • Hence, calcium hydroxide used to increase pH of acidic soil.

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