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Answer:
1. Substances like these which are bitter in taste and feel soapy on touching are known as bases
2. natural indicators are red cabbage, turmeric, grape juice, turnip skin, curry powder
3. acetic acid
4. The acid which ants produce is called methanoic acid or formic acid.
5. lactic acid bacteria
6. An antacid is a substance which neutralizes stomach acidity and is used to relieve heartburn, indigestion or an upset stomach.
7. Calcium hydroxide
8. Sodium Hydroxide
9. A solution that is neither acidic nor basic is neutral and has a pH of 7. The pH scale, which ranges from 0 to 14, indicates how acidic or basic a substance is.
10. Calcium hydroxide
11. sulfuric and nitric acids
12. Phenolphthalein is another commonly used indicator for titrations, and is another weak acid.
13. Magnesium hydroxide
14. The most common way to raise the pH of soil is to add pulverized limestone to the soil. Limestone acts as a soil acid neutralizer and consists of either calcium and magnesium carbonate or calcium carbonate. These are called dolomitic limestone and calcitic limestone respectively.
15. DNA
Explanation:
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