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Acid and Bases Important Questions - Class 10 Science PDF Download
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FAQs on Visual Worksheet: Acid and Bases
| 1. What are the main differences between acids and bases? |  |
Ans. Acids are substances that release hydrogen ions (H⁺) in solution, resulting in a pH less than 7. They often have a sour taste and can turn blue litmus paper red. Bases, on the other hand, release hydroxide ions (OH⁻) and have a pH greater than 7. They usually taste bitter and can turn red litmus paper blue. Additionally, acids tend to react with metals, while bases can react with acids in a neutralization reaction.
| 2. How do you determine the strength of an acid or a base? | |
Ans. The strength of an acid or base is determined by its ability to dissociate in water. Strong acids, such as hydrochloric acid (HCl), dissociate completely, releasing a large number of H⁺ ions, resulting in a low pH. Conversely, weak acids, like acetic acid, only partially dissociate, yielding fewer H⁺ ions and a higher pH. For bases, strong bases like sodium hydroxide (NaOH) dissociate completely, while weak bases like ammonia (NH₃) do not dissociate fully in solution.
| 3. What is the pH scale and how is it used? | |
Ans. The pH scale is a logarithmic scale ranging from 0 to 14 that measures the acidity or basicity of a solution. A pH of 7 is neutral, values below 7 indicate acidic solutions, and values above 7 indicate basic solutions. The scale is used to quantify the concentration of hydrogen ions in a solution, helping to determine how acidic or basic a substance is, which is crucial for various scientific applications and reactions.
| 4. What are some common examples of acids and bases found in everyday life? | |
Ans. Common acids include citric acid found in citrus fruits, acetic acid in vinegar, and sulfuric acid in batteries. Everyday bases include sodium bicarbonate (baking soda), found in many kitchens, and ammonia used in household cleaners. These substances play significant roles in cooking, cleaning, and various industrial processes.
| 5. What safety precautions should be taken when handling acids and bases? | |
Ans. When handling acids and bases, it is essential to wear appropriate personal protective equipment, such as gloves, goggles, and lab coats, to prevent skin and eye contact. Always work in a well-ventilated area or use a fume hood to avoid inhaling fumes. Additionally, never mix acids and bases directly; instead, add acid to water slowly to avoid exothermic reactions and potential splashes. Always have a neutralizing agent, such as baking soda for acids, on hand in case of spills.
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Document Description: Visual Worksheet: Acid and Bases for Class 10 2026 is part of Science Class 10 preparation. The notes and questions for Visual Worksheet: Acid and Bases have been prepared according to the Class 10 exam syllabus. Information about Visual Worksheet: Acid and Bases covers topics like and Visual Worksheet: Acid and Bases Example, for Class 10 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Visual Worksheet: Acid and Bases.
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