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Cbse Class 10 Science Chapter 2 Important Questions - Acids, Bases, And Salts

Class 10

Science

Acids, bases, and salts are fundamental concepts in chemistry that explain the chemical properties and behavior of substances. Mastering these topics is essential for success in the CBSE Class 10 Science board exam.

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Class 10 Science Chapter 2 Important Questions - Acids, Bases, And Salts

Here are 20 important questions on Class 10 Science Acids, Bases, And Salts

Define acids and bases in terms of their ability to furnish H+H+ and OH−OH− ions.
What are the general properties of acids?
What are the general properties of bases?
Provide examples of common acids and their uses.
Provide examples of common bases and their uses.
What is neutralization? Describe the process with a chemical equation.
Explain the concept of the pH scale and its significance.
How does the pH scale relate to acidity and basicity?
Why is it important to maintain a specific pH level in our bodies?
Describe how pH affects soil quality and plant growth.
What is sodium hydroxide, and what are its common applications?
Explain the preparation of sodium hydroxide from sodium chloride.
What is bleaching powder, and what are its uses?
Describe how bleaching powder is prepared from calcium hydroxide.
What is baking soda, and how is it used in cooking?
Explain the preparation of washing soda from sodium carbonate.
What are the uses of washing soda in household cleaning?
Describe plaster of Paris and its applications in construction.
How is plaster of Paris prepared from gypsum?
Discuss the importance of understanding acids, bases, and salts in everyday life.

These questions encompass definitions, properties, examples, reactions, and practical applications related to acids, bases, and salts as outlined in your syllabus.

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Acids, Bases, and Salts Short Notes:

These short notes on Acids, Bases, and Salts summarize key concepts, reactions, and important definitions, providing quick revision material for Class 10 Science:

1. Acids and Bases:

Acids: Substances that release H+ ions in an aqueous solution. Examples: Hydrochloric acid (HCl), Sulfuric acid (H₂SO₄).

Bases: Substances that release OH– ions in an aqueous solution. Examples: Sodium hydroxide (NaOH), Calcium hydroxide (Ca(OH)₂).

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2. Properties of Acids and Bases:

Acids: Sour taste, turn blue litmus paper red, conduct electricity, neutralize bases.

Bases: Bitter taste, slippery feel, turn red litmus paper blue, neutralize acids.

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3. Neutralization Reaction:

The reaction between an acid and a base to form water and salt. Example:

HCl + NaOH \rightarrow NaCl + H_2O

This reaction is important in everyday life, such as in antacid medicines.

4. pH Scale:

A scale that measures the acidity or alkalinity of a solution, ranging from 0 to 14.

pH < 7: Acidic, pH = 7: Neutral, pH > 7: Basic.

pH plays an important role in biological systems (e.g., the pH of human blood is around 7.4).

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5. Important Salts and Their Uses:

Sodium Hydroxide (NaOH): Used in soap-making, cleaning agents, and as a drain cleaner.

Bleaching Powder (Ca(OCl)₂): Used for bleaching fabrics, disinfecting water, and in the manufacture of chlorine gas.

Baking Soda (NaHCO₃): Used in baking, as a cleaning agent, and in antacid preparations.

Washing Soda (Na₂CO₃): Used in cleaning, washing clothes, and in the manufacture of glass.

Plaster of Paris (CaSO₄ · ½ H₂O): Used for making sculptures, casts, and in medical applications like setting fractures.

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6. Importance of pH in Everyday Life:

pH is essential for regulating processes in living organisms, such as digestion (stomach acid), and in agriculture (soil pH affects plant growth).

Acid-Base Titration: A method used to determine the concentration of an unknown acid or base by neutralizing it with a base or acid of known concentration.

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These notes cover the essential points related to acids, bases, and salts and are perfect for quick revision of the chapter.

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Conclusion

To excel in CBSE Class 10 Science, it’s essential to have a strong grasp of acids, bases, and salts as part of the Class 10 Science syllabus.

Utilize Class 10 Science study materials, solve Class 10 Science sample papers, and refer to the CBSE Class 10 Science Chapter 2 important questions to ensure success.

Understanding the Class 10 marking scheme will further guide your exam preparation.