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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 146-180 (9).mp3 | What do you observe? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (1).mp3 | The acid must always be added slowly to water with constant stirring. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (10).mp3 | Why does dry HCl gas not change the colour of the dry litmus paper? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (11).mp3 | While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (12).mp3 | How is the concentration of hydronium ions (H 3 O+ ) affected when a solution of an acid is diluted? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (13).mp3 | How is the concentration of hydroxide ions (OH –) affected when excess base is dissolved in a solution of sodium hydroxide? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (14).mp3 | HOW STRONG ARE ACID OR BASE SOLUTIONS? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (15).mp3 | We know how acid-base indicators can be used to distinguish between an acid and a base. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (16).mp3 | We have also learnt in the previous section about dilution and decrease in concentration of H+ or OH– ions in solutions. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (17).mp3 | Can we quantitatively find the amount of these ions present in a solution? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (18).mp3 | Can we judge how strong a given acid or base is? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (19).mp3 | We can do this by making use of a universal indicator, which is a mixture of several indicators. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (2).mp3 | If water is added to a concentrated acid, the heat generated may cause the mixture to splash out and cause burns. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (20).mp3 | The universal indicator shows different colours at different concentrations of hydrogen ions in a solution. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (21).mp3 | A scale for measuring hydrogen ion concentration in a solution, called pH scale has been developed. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (22).mp3 | The p in pH stands for ‘potenz’ in German, meaning power. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (23).mp3 | On the pH scale we can measure pH generally from 0 (very acidic) to 14 (very alkaline). | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (24).mp3 | pH should be thought of simply as a number which indicates the acidic or basic nature of a solution. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (25).mp3 | Higher is the hydronium ion concentration, lower is the pH value. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (26).mp3 | The pH of a neutral solution is 7. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (27).mp3 | Values less than 7 on the pH scale represent an acidic solution. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (28).mp3 | As the pH value increases from 7 to 14, it represents an increase in OH– ion concentration in the solution, that is, increase in the strength of alkali. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (29).mp3 | Generally paper impregnated with the universal indicator is used for measuring pH. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (3).mp3 | The glass container may also break due to excessive local heating. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (30).mp3 | Variation of pH with the change in concentration of H+ and OH– ions. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (31).mp3 | pH of some common substances shown on a pH paper. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (32).mp3 | The strength of acids and bases depends on the number of H+ ions and OH– ions produced, respectively. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (4).mp3 | Look out for the warning sign on the can of concentrated sulphuric acid and on the bottle of sodium hydroxide pellets. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (5).mp3 | Mixing an acid or base with water results in decrease in the concentration of ions per unit volume. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (6).mp3 | Such a process is called dilution and the acid or the base is said to be diluted. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (7).mp3 | QUESTIONS | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (8).mp3 | Why do HCl, HNO 3, etc., show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 181-212 (9).mp3 | Why does an aqueous solution of an acid conduct electricity? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (1).mp3 | If we take hydrochloric acid and acetic acid of the same concentration, say one molar, then these produce different amounts of hydrogen ions. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (10).mp3 | The survival of aquatic life in such rivers becomes difficult. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (11).mp3 | Do You Know? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (12).mp3 | The atmosphere of venus is made up of thick white and yellowish clouds of sulphuric acid. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (13).mp3 | Do you think life can exist on this planet? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (14).mp3 | What is the pH of the soil in your backyard? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (15).mp3 | Plants require a specific pH range for their healthy growth. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (16).mp3 | To find out the pH required for the healthy growth of a plant, you can collect the soil from various places and check the pH in the manner described below. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (17).mp3 | Also, you can note down which plants are growing in the region from which you have collected the soil. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (18).mp3 | Put about 2 g soil in a test tube and add 5 mL water to it. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (19).mp3 | Shake the contents of the test tube. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (2).mp3 | Acids that give rise to more H+ ions are said to be strong acids, and acids that give less H+ ions are said to be weak acids. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (20).mp3 | Filter the contents and collect the filtrate in a test tube. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (21).mp3 | Check the pH of this filtrate with the help of universal indicator paper. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (22).mp3 | What can you conclude about the ideal soil pH for the growth of plants in your region? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (23).mp3 | pH in our digestive system. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (24).mp3 | It is very interesting to note that our stomach produces hydrochloric acid. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (25).mp3 | It helps in the digestion of food without harming the stomach. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (26).mp3 | During indigestion the stomach produces too much acid and this causes pain and irritation. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (27).mp3 | To get rid of this pain, people use bases called antacids. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (28).mp3 | One such remedy must have been suggested by you at the beginning of this Chapter. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (29).mp3 | These antacids neutralise the excess acid. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (3).mp3 | Can you now say what weak and strong bases are? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (30).mp3 | Magnesium hydroxide, a mild base, is often used for this purpose. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (31).mp3 | pH change as the cause of tooth decay. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (32).mp3 | Tooth decay starts when the pH of the mouth is lower than 5.5. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (33).mp3 | Tooth enamel, made up of calcium phosphate is the hardest substance in the body. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (34).mp3 | It does not dissolve in water, but is corroded when the pH in the mouth is below 5.5. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (35).mp3 | Bacteria present in the mouth produce acids by degradation of sugar and food particles remaining in the mouth after eating. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (36).mp3 | The best way to prevent this is to clean the mouth after eating food. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (4).mp3 | Importance of pH in Everyday Life | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (5).mp3 | Are plants and animals pH sensitive? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (6).mp3 | Our body works within the pH range of 7.0 to 7.8. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (7).mp3 | Living organisms can survive only in a narrow range of pH change. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (8).mp3 | When pH of rain water is less than 5.6, it is called acid rain. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 214-249 (9).mp3 | When acid rain flows into the rivers, it lowers the pH of the river water. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (1).mp3 | Using toothpastes, which are generally basic, for cleaning the teeth can neutralise the excess acid and prevent tooth decay. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (10).mp3 | This is due to the methanoic acid secreted by them. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (11).mp3 | A traditional remedy is rubbing the area with the leaf of the dock plant, which often grows beside the nettle in the wild. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (12).mp3 | Can you guess the nature of the dock plant? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (13).mp3 | So next time you know what to look out for if you accidentally touch a nettle plant while trekking. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (14).mp3 | Are you aware of any other effective traditional remedies for such stings? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (15).mp3 | Which solution has more hydrogen ion concentration? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (16).mp3 | Which of this is acidic and which one is basic? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (17).mp3 | What effect does the concentration of H+ ions have on the nature of the solution? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (18).mp3 | Do basic solutions also have H+ ions? If yes, then why are these basic? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (19).mp3 | Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (2).mp3 | Self defence by animals and plants through chemical warfare. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (20).mp3 | MORE ABOUT SALTS | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (21).mp3 | In the previous sections we have seen the formation of salts during various reactions. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (22).mp3 | Let us understand more about their preparation, properties and uses. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (23).mp3 | Family of Salts | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (23)nxt.mp3 | Write the formulae of the salts given below. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (24).mp3 | Potassium sulphate, sodium sulphate, calcium sulphate, magnesium sulphate, copper sulphate, sodium chloride, sodium nitrate, sodium carbonate and ammonium chloride. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (25).mp3 | Identify the acids and bases from which the above salts may be obtained. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (26).mp3 | Salts having the same positive or negative radicals are said to belong to a family. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (27).mp3 | For example, NaCl and Na2 SO4 belong to the family of sodium salts. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (28).mp3 | Similarly, NaCl and KCl belong to the family of chloride salts. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (29).mp3 | How many families can you identify among the salts given in this Activity? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (3).mp3 | Have you ever been stung by a honey-bee? Bee-sting leaves an acid which causes pain and irritation. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (30).mp3 | Collect the following salt samples – sodium chloride, potassium nitrate, aluminium chloride, zinc sulphate, copper sulphate, sodium acetate, sodium carbonate and sodium hydrogencarbonate. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (31).mp3 | Check their solubility in water (use distilled water only). | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (32).mp3 | Check the action of these solutions on litmus and find the pH using a pH paper. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (4).mp3 | Use of a mild base like baking soda on the stung area gives relief. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (5).mp3 | Stinging hair of nettle leaves inject methanoic acid causing burning pain. | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (6).mp3 | Do You Know? | 5.003 |
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/storage/hf-datasets-cache/all/datasets/90464960732238-config-parquet-and-info-Achitha-10th_science_tami-3da38f41/downloads/extracted/d9d4926c0124d2e04cd19b14dc563fffc63a20ec0a8fb643177acf601be9c5d5/train/chapter 2 250-282 (7).mp3 | Nature provides neutralisation options. | 5.003 |