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Index: Acids, Bases & Salts | Science Class 10 PDF Download

(a) Introductory Content

(b) Chemical Properties of Acids and Bases

(c) How Strong are Acid or Base Solutions?

(d) Salts

(e) Previous Year Questions

(f) NCERT Textbook & Solutions

(g) Summary & Mindmap

(h) Lakhmir Singh & Manjit Kaur Test & Solutions

(i) Full Chapter Practice Tests and Docs

(j) Worksheet Questions

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FAQs on Index: Acids, Bases & Salts - Science Class 10

1. What are acids, bases, and salts?
Ans. Acids, bases, and salts are three types of chemical compounds. Acids are substances that release hydrogen ions (H+) when dissolved in water, have a sour taste, and can turn blue litmus paper red. Bases are substances that release hydroxide ions (OH-) when dissolved in water, have a bitter taste, and can turn red litmus paper blue. Salts are compounds formed when an acid reacts with a base, resulting in the neutralization of their respective properties.
2. How do acids, bases, and salts react with each other?
Ans. Acids and bases react with each other in a process called neutralization. During neutralization, the hydrogen ions (H+) from the acid combine with the hydroxide ions (OH-) from the base to form water (H2O). At the same time, the remaining ions from the acid and the base combine to form a salt. This reaction results in the neutralization of the acidic and basic properties, leading to the formation of water and a salt.
3. What are some examples of common acids, bases, and salts?
Ans. Some examples of common acids include hydrochloric acid (HCl), sulfuric acid (H2SO4), and acetic acid (CH3COOH). Common bases include sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2). Examples of salts include sodium chloride (NaCl), potassium nitrate (KNO3), and calcium carbonate (CaCO3).
4. How can I identify whether a substance is an acid, base, or salt?
Ans. There are several ways to identify whether a substance is an acid, base, or salt. One way is to test its reaction with litmus paper. Acids turn blue litmus paper red, while bases turn red litmus paper blue. Another way is to taste the substance. Acids have a sour taste, bases have a bitter taste, and salts are usually tasteless. Additionally, you can test the substance's pH using pH paper or a pH meter. Acids have a pH less than 7, bases have a pH greater than 7, and salts usually have a neutral pH of 7.
5. What are some practical applications of acids, bases, and salts in everyday life?
Ans. Acids, bases, and salts have various practical applications in everyday life. Acids like citric acid and acetic acid are used in food and beverage production to add sourness and enhance flavors. Bases like sodium hydroxide are used in cleaning products to dissolve grease and remove stains. Salts like sodium chloride are extensively used as a food seasoning. Additionally, acids and bases are used in various industrial processes, such as in the production of fertilizers, pharmaceuticals, and dyes.
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