Chemistry
Grade-9
Easy
Question
What is calcium hydroxide used for?
- To increase the pH of acidic soil.
- To remove impurities from water.
- To oxidize gunpowder.
- 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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